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Finding the Fourth Proportional to 141,877.86, 212,847.92 and 42,045.87

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Solution

The fourth proportional to 141,877.86, 212,847.92 and 42,045.87 is: 63,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,877.86 : 212,847.92 = 42,045.87 : x
  2. Step 2: Convert to fraction form
    141,877.86/212,847.92 = 42,045.87/x
  3. Step 3: Cross multiply
    141,877.86x = 212,847.92 × 42,045.87
  4. Step 4: Simplify right side
    141,877.86x = 8,949,375,974.09
  5. Step 5: Solve for x
    x = 8,949,375,974.09/141,877.86
  6. Step 6: Final answer
    x = 63,078.03

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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.