Home / 128,618,854.56-177,495,633.54-69,882,500.58

Finding the Fourth Proportional to 128,618,854.56, 177,495,633.54 and 69,882,500.58

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Solution

The fourth proportional to 128,618,854.56, 177,495,633.54 and 69,882,500.58 is: 96,438,727.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,618,854.56 : 177,495,633.54 = 69,882,500.58 : x
  2. Step 2: Convert to fraction form
    128,618,854.56/177,495,633.54 = 69,882,500.58/x
  3. Step 3: Cross multiply
    128,618,854.56x = 177,495,633.54 × 69,882,500.58
  4. Step 4: Simplify right side
    128,618,854.56x = 12,403,838,713,806,516
  5. Step 5: Solve for x
    x = 12,403,838,713,806,516/128,618,854.56
  6. Step 6: Final answer
    x = 96,438,727.87

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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.