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Finding the Fourth Proportional to 100,891.74, 151,350.98 and 53,531.04

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Solution

The fourth proportional to 100,891.74, 151,350.98 and 53,531.04 is: 80,303.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,891.74 : 151,350.98 = 53,531.04 : x
  2. Step 2: Convert to fraction form
    100,891.74/151,350.98 = 53,531.04/x
  3. Step 3: Cross multiply
    100,891.74x = 151,350.98 × 53,531.04
  4. Step 4: Simplify right side
    100,891.74x = 8,101,975,364.42
  5. Step 5: Solve for x
    x = 8,101,975,364.42/100,891.74
  6. Step 6: Final answer
    x = 80,303.65

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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.