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Finding the Fourth Proportional to 63,615,113.76, 87,786,551.88 and 38,876,687.76

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Solution

The fourth proportional to 63,615,113.76, 87,786,551.88 and 38,876,687.76 is: 53,648,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,615,113.76 : 87,786,551.88 = 38,876,687.76 : x
  2. Step 2: Convert to fraction form
    63,615,113.76/87,786,551.88 = 38,876,687.76/x
  3. Step 3: Cross multiply
    63,615,113.76x = 87,786,551.88 × 38,876,687.76
  4. Step 4: Simplify right side
    63,615,113.76x = 3,412,850,366,965,800.50
  5. Step 5: Solve for x
    x = 3,412,850,366,965,800.50/63,615,113.76
  6. Step 6: Final answer
    x = 53,648,420.40

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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.