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Finding the Fourth Proportional to 70,540.67, 97,347.32 and 38,712.53

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Solution

The fourth proportional to 70,540.67, 97,347.32 and 38,712.53 is: 53,423.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,540.67 : 97,347.32 = 38,712.53 : x
  2. Step 2: Convert to fraction form
    70,540.67/97,347.32 = 38,712.53/x
  3. Step 3: Cross multiply
    70,540.67x = 97,347.32 × 38,712.53
  4. Step 4: Simplify right side
    70,540.67x = 3,768,561,240.90
  5. Step 5: Solve for x
    x = 3,768,561,240.90/70,540.67
  6. Step 6: Final answer
    x = 53,423.95

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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.