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Finding the Fourth Proportional to 71,381.96, 98,502.98 and 39,548.96

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Solution

The fourth proportional to 71,381.96, 98,502.98 and 39,548.96 is: 54,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,381.96 : 98,502.98 = 39,548.96 : x
  2. Step 2: Convert to fraction form
    71,381.96/98,502.98 = 39,548.96/x
  3. Step 3: Cross multiply
    71,381.96x = 98,502.98 × 39,548.96
  4. Step 4: Simplify right side
    71,381.96x = 3,895,690,415.90
  5. Step 5: Solve for x
    x = 3,895,690,415.90/71,381.96
  6. Step 6: Final answer
    x = 54,575.28

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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.