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Finding the Fourth Proportional to 71,603.18, 107,345.64 and 31,593.68

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Solution

The fourth proportional to 71,603.18, 107,345.64 and 31,593.68 is: 47,364.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,603.18 : 107,345.64 = 31,593.68 : x
  2. Step 2: Convert to fraction form
    71,603.18/107,345.64 = 31,593.68/x
  3. Step 3: Cross multiply
    71,603.18x = 107,345.64 × 31,593.68
  4. Step 4: Simplify right side
    71,603.18x = 3,391,443,799.56
  5. Step 5: Solve for x
    x = 3,391,443,799.56/71,603.18
  6. Step 6: Final answer
    x = 47,364.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.