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Finding the Fourth Proportional to 141,872.92, 212,840.51 and 42,040.92

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Solution

The fourth proportional to 141,872.92, 212,840.51 and 42,040.92 is: 63,070.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,872.92 : 212,840.51 = 42,040.92 : x
  2. Step 2: Convert to fraction form
    141,872.92/212,840.51 = 42,040.92/x
  3. Step 3: Cross multiply
    141,872.92x = 212,840.51 × 42,040.92
  4. Step 4: Simplify right side
    141,872.92x = 8,948,011,678.10
  5. Step 5: Solve for x
    x = 8,948,011,678.10/141,872.92
  6. Step 6: Final answer
    x = 63,070.61

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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.