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Finding the Fourth Proportional to 72,031.16, 108,064.02 and 27,658.28

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Solution

The fourth proportional to 72,031.16, 108,064.02 and 27,658.28 is: 41,494.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,031.16 : 108,064.02 = 27,658.28 : x
  2. Step 2: Convert to fraction form
    72,031.16/108,064.02 = 27,658.28/x
  3. Step 3: Cross multiply
    72,031.16x = 108,064.02 × 27,658.28
  4. Step 4: Simplify right side
    72,031.16x = 2,988,864,923.09
  5. Step 5: Solve for x
    x = 2,988,864,923.09/72,031.16
  6. Step 6: Final answer
    x = 41,494.06

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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.