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Finding the Fourth Proportional to 71,445.72, 98,524.98 and 65,795.16

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Solution

The fourth proportional to 71,445.72, 98,524.98 and 65,795.16 is: 90,732.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,445.72 : 98,524.98 = 65,795.16 : x
  2. Step 2: Convert to fraction form
    71,445.72/98,524.98 = 65,795.16/x
  3. Step 3: Cross multiply
    71,445.72x = 98,524.98 × 65,795.16
  4. Step 4: Simplify right side
    71,445.72x = 6,482,466,823.10
  5. Step 5: Solve for x
    x = 6,482,466,823.10/71,445.72
  6. Step 6: Final answer
    x = 90,732.75

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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.