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Finding the Fourth Proportional to 58,101.88, 87,142.79 and 15,407.61

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Solution

The fourth proportional to 58,101.88, 87,142.79 and 15,407.61 is: 23,108.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,101.88 : 87,142.79 = 15,407.61 : x
  2. Step 2: Convert to fraction form
    58,101.88/87,142.79 = 15,407.61/x
  3. Step 3: Cross multiply
    58,101.88x = 87,142.79 × 15,407.61
  4. Step 4: Simplify right side
    58,101.88x = 1,342,662,045.59
  5. Step 5: Solve for x
    x = 1,342,662,045.59/58,101.88
  6. Step 6: Final answer
    x = 23,108.75

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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.