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Finding the Fourth Proportional to 100,787.55, 151,230.51 and 63,365.22

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Solution

The fourth proportional to 100,787.55, 151,230.51 and 63,365.22 is: 95,078.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,787.55 : 151,230.51 = 63,365.22 : x
  2. Step 2: Convert to fraction form
    100,787.55/151,230.51 = 63,365.22/x
  3. Step 3: Cross multiply
    100,787.55x = 151,230.51 × 63,365.22
  4. Step 4: Simplify right side
    100,787.55x = 9,582,754,536.86
  5. Step 5: Solve for x
    x = 9,582,754,536.86/100,787.55
  6. Step 6: Final answer
    x = 95,078.75

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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.