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Finding the Fourth Proportional to 121,143.88, 181,753.04 and 62,021.05

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Solution

The fourth proportional to 121,143.88, 181,753.04 and 62,021.05 is: 93,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,143.88 : 181,753.04 = 62,021.05 : x
  2. Step 2: Convert to fraction form
    121,143.88/181,753.04 = 62,021.05/x
  3. Step 3: Cross multiply
    121,143.88x = 181,753.04 × 62,021.05
  4. Step 4: Simplify right side
    121,143.88x = 11,272,514,381.49
  5. Step 5: Solve for x
    x = 11,272,514,381.49/121,143.88
  6. Step 6: Final answer
    x = 93,050.63

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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.