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Finding the Fourth Proportional to 141,879.52, 212,817.84 and 42,040.48

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Solution

The fourth proportional to 141,879.52, 212,817.84 and 42,040.48 is: 63,060.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,879.52 : 212,817.84 = 42,040.48 : x
  2. Step 2: Convert to fraction form
    141,879.52/212,817.84 = 42,040.48/x
  3. Step 3: Cross multiply
    141,879.52x = 212,817.84 × 42,040.48
  4. Step 4: Simplify right side
    141,879.52x = 8,946,964,146.16
  5. Step 5: Solve for x
    x = 8,946,964,146.16/141,879.52
  6. Step 6: Final answer
    x = 63,060.29

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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.