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Finding the Fourth Proportional to 71,380.46, 98,500.92 and 39,547.46

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Solution

The fourth proportional to 71,380.46, 98,500.92 and 39,547.46 is: 54,573.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,380.46 : 98,500.92 = 39,547.46 : x
  2. Step 2: Convert to fraction form
    71,380.46/98,500.92 = 39,547.46/x
  3. Step 3: Cross multiply
    71,380.46x = 98,500.92 × 39,547.46
  4. Step 4: Simplify right side
    71,380.46x = 3,895,461,193.66
  5. Step 5: Solve for x
    x = 3,895,461,193.66/71,380.46
  6. Step 6: Final answer
    x = 54,573.22

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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.