Home / 28,128,769,143.64-38,816,275,896.60-16,697,826,609.12

Finding the Fourth Proportional to 28,128,769,143.64, 38,816,275,896.60 and 16,697,826,609.12

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Solution

The fourth proportional to 28,128,769,143.64, 38,816,275,896.60 and 16,697,826,609.12 is: 23,042,154,501.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128,769,143.64 : 38,816,275,896.60 = 16,697,826,609.12 : x
  2. Step 2: Convert to fraction form
    28,128,769,143.64/38,816,275,896.60 = 16,697,826,609.12/x
  3. Step 3: Cross multiply
    28,128,769,143.64x = 38,816,275,896.60 × 16,697,826,609.12
  4. Step 4: Simplify right side
    28,128,769,143.64x = 648,147,444,533,190,721,536
  5. Step 5: Solve for x
    x = 648,147,444,533,190,721,536/28,128,769,143.64
  6. Step 6: Final answer
    x = 23,042,154,501.09

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.