Home / 28,128,769,142.40-38,816,275,894.92-16,697,826,607.86

Finding the Fourth Proportional to 28,128,769,142.40, 38,816,275,894.92 and 16,697,826,607.86

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Solution

The fourth proportional to 28,128,769,142.40, 38,816,275,894.92 and 16,697,826,607.86 is: 23,042,154,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128,769,142.40 : 38,816,275,894.92 = 16,697,826,607.86 : x
  2. Step 2: Convert to fraction form
    28,128,769,142.40/38,816,275,894.92 = 16,697,826,607.86/x
  3. Step 3: Cross multiply
    28,128,769,142.40x = 38,816,275,894.92 × 16,697,826,607.86
  4. Step 4: Simplify right side
    28,128,769,142.40x = 648,147,444,456,229,961,728
  5. Step 5: Solve for x
    x = 648,147,444,456,229,961,728/28,128,769,142.40
  6. Step 6: Final answer
    x = 23,042,154,499.37

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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.