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Finding the Fourth Proportional to 141,889.86, 212,855.45 and 42,037.11

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Solution

The fourth proportional to 141,889.86, 212,855.45 and 42,037.11 is: 63,061.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,889.86 : 212,855.45 = 42,037.11 : x
  2. Step 2: Convert to fraction form
    141,889.86/212,855.45 = 42,037.11/x
  3. Step 3: Cross multiply
    141,889.86x = 212,855.45 × 42,037.11
  4. Step 4: Simplify right side
    141,889.86x = 8,947,827,755.56
  5. Step 5: Solve for x
    x = 8,947,827,755.56/141,889.86
  6. Step 6: Final answer
    x = 63,061.78

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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.