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Finding the Fourth Proportional to 70,679.89, 97,539.02 and 38,414.53

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Solution

The fourth proportional to 70,679.89, 97,539.02 and 38,414.53 is: 53,012.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,679.89 : 97,539.02 = 38,414.53 : x
  2. Step 2: Convert to fraction form
    70,679.89/97,539.02 = 38,414.53/x
  3. Step 3: Cross multiply
    70,679.89x = 97,539.02 × 38,414.53
  4. Step 4: Simplify right side
    70,679.89x = 3,746,915,609.96
  5. Step 5: Solve for x
    x = 3,746,915,609.96/70,679.89
  6. Step 6: Final answer
    x = 53,012.47

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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.