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Finding the Fourth Proportional to 100,730.88, 151,074.72 and 41,551.20

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Solution

The fourth proportional to 100,730.88, 151,074.72 and 41,551.20 is: 62,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,730.88 : 151,074.72 = 41,551.20 : x
  2. Step 2: Convert to fraction form
    100,730.88/151,074.72 = 41,551.20/x
  3. Step 3: Cross multiply
    100,730.88x = 151,074.72 × 41,551.20
  4. Step 4: Simplify right side
    100,730.88x = 6,277,335,905.66
  5. Step 5: Solve for x
    x = 6,277,335,905.66/100,730.88
  6. Step 6: Final answer
    x = 62,317.89

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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.