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Finding the Fourth Proportional to 73,987.42, 111,221.71 and 59,356.40

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Solution

The fourth proportional to 73,987.42, 111,221.71 and 59,356.40 is: 89,227.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,987.42 : 111,221.71 = 59,356.40 : x
  2. Step 2: Convert to fraction form
    73,987.42/111,221.71 = 59,356.40/x
  3. Step 3: Cross multiply
    73,987.42x = 111,221.71 × 59,356.40
  4. Step 4: Simplify right side
    73,987.42x = 6,601,720,307.44
  5. Step 5: Solve for x
    x = 6,601,720,307.44/73,987.42
  6. Step 6: Final answer
    x = 89,227.61

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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.