Home / 18,289,918,544.72-25,193,059,584.36-12,928,261,115.60

Finding the Fourth Proportional to 18,289,918,544.72, 25,193,059,584.36 and 12,928,261,115.60

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Solution

The fourth proportional to 18,289,918,544.72, 25,193,059,584.36 and 12,928,261,115.60 is: 17,807,758,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289,918,544.72 : 25,193,059,584.36 = 12,928,261,115.60 : x
  2. Step 2: Convert to fraction form
    18,289,918,544.72/25,193,059,584.36 = 12,928,261,115.60/x
  3. Step 3: Cross multiply
    18,289,918,544.72x = 25,193,059,584.36 × 12,928,261,115.60
  4. Step 4: Simplify right side
    18,289,918,544.72x = 325,702,452,607,475,318,784
  5. Step 5: Solve for x
    x = 325,702,452,607,475,318,784/18,289,918,544.72
  6. Step 6: Final answer
    x = 17,807,758,509.76

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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.