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Finding the Fourth Proportional to 84,635.55, 116,531.19 and 71,862.12

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Solution

The fourth proportional to 84,635.55, 116,531.19 and 71,862.12 is: 98,943.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,635.55 : 116,531.19 = 71,862.12 : x
  2. Step 2: Convert to fraction form
    84,635.55/116,531.19 = 71,862.12/x
  3. Step 3: Cross multiply
    84,635.55x = 116,531.19 × 71,862.12
  4. Step 4: Simplify right side
    84,635.55x = 8,374,178,359.52
  5. Step 5: Solve for x
    x = 8,374,178,359.52/84,635.55
  6. Step 6: Final answer
    x = 98,943.98

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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.