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Finding the Fourth Proportional to 71,602.65, 98,808.84 and 39,773.57

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Solution

The fourth proportional to 71,602.65, 98,808.84 and 39,773.57 is: 54,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,602.65 : 98,808.84 = 39,773.57 : x
  2. Step 2: Convert to fraction form
    71,602.65/98,808.84 = 39,773.57/x
  3. Step 3: Cross multiply
    71,602.65x = 98,808.84 × 39,773.57
  4. Step 4: Simplify right side
    71,602.65x = 3,929,979,820.31
  5. Step 5: Solve for x
    x = 3,929,979,820.31/71,602.65
  6. Step 6: Final answer
    x = 54,885.95

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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.