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Finding the Fourth Proportional to 83,662,886.10, 125,494,329.15 and 77,923,323.30

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Solution

The fourth proportional to 83,662,886.10, 125,494,329.15 and 77,923,323.30 is: 116,884,984.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,662,886.10 : 125,494,329.15 = 77,923,323.30 : x
  2. Step 2: Convert to fraction form
    83,662,886.10/125,494,329.15 = 77,923,323.30/x
  3. Step 3: Cross multiply
    83,662,886.10x = 125,494,329.15 × 77,923,323.30
  4. Step 4: Simplify right side
    83,662,886.10x = 9,778,935,182,672,064
  5. Step 5: Solve for x
    x = 9,778,935,182,672,064/83,662,886.10
  6. Step 6: Final answer
    x = 116,884,984.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.