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Finding the Fourth Proportional to 113,393.55, 169,971.66 and 42,287.59

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Solution

The fourth proportional to 113,393.55, 169,971.66 and 42,287.59 is: 63,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,393.55 : 169,971.66 = 42,287.59 : x
  2. Step 2: Convert to fraction form
    113,393.55/169,971.66 = 42,287.59/x
  3. Step 3: Cross multiply
    113,393.55x = 169,971.66 × 42,287.59
  4. Step 4: Simplify right side
    113,393.55x = 7,187,691,444.77
  5. Step 5: Solve for x
    x = 7,187,691,444.77/113,393.55
  6. Step 6: Final answer
    x = 63,387.13

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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.