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Finding the Fourth Proportional to 73,691.66, 110,431.88 and 42,036.22

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Solution

The fourth proportional to 73,691.66, 110,431.88 and 42,036.22 is: 62,994.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,691.66 : 110,431.88 = 42,036.22 : x
  2. Step 2: Convert to fraction form
    73,691.66/110,431.88 = 42,036.22/x
  3. Step 3: Cross multiply
    73,691.66x = 110,431.88 × 42,036.22
  4. Step 4: Simplify right side
    73,691.66x = 4,642,138,802.69
  5. Step 5: Solve for x
    x = 4,642,138,802.69/73,691.66
  6. Step 6: Final answer
    x = 62,994.09

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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.