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Finding the Fourth Proportional to 71,357.10, 98,474.96 and 39,528.96

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Solution

The fourth proportional to 71,357.10, 98,474.96 and 39,528.96 is: 54,551.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,357.10 : 98,474.96 = 39,528.96 : x
  2. Step 2: Convert to fraction form
    71,357.10/98,474.96 = 39,528.96/x
  3. Step 3: Cross multiply
    71,357.10x = 98,474.96 × 39,528.96
  4. Step 4: Simplify right side
    71,357.10x = 3,892,612,557.20
  5. Step 5: Solve for x
    x = 3,892,612,557.20/71,357.10
  6. Step 6: Final answer
    x = 54,551.16

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1.5x scale

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.