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Finding the Fourth Proportional to 71,164,963.70, 106,747,445.55 and 65,622,230.90

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Solution

The fourth proportional to 71,164,963.70, 106,747,445.55 and 65,622,230.90 is: 98,433,346.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,164,963.70 : 106,747,445.55 = 65,622,230.90 : x
  2. Step 2: Convert to fraction form
    71,164,963.70/106,747,445.55 = 65,622,230.90/x
  3. Step 3: Cross multiply
    71,164,963.70x = 106,747,445.55 × 65,622,230.90
  4. Step 4: Simplify right side
    71,164,963.70x = 7,005,005,519,867,277
  5. Step 5: Solve for x
    x = 7,005,005,519,867,277/71,164,963.70
  6. Step 6: Final answer
    x = 98,433,346.35

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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.