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Finding the Fourth Proportional to 104,729.55, 156,952.65 and 75,081.93

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Solution

The fourth proportional to 104,729.55, 156,952.65 and 75,081.93 is: 112,521.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,729.55 : 156,952.65 = 75,081.93 : x
  2. Step 2: Convert to fraction form
    104,729.55/156,952.65 = 75,081.93/x
  3. Step 3: Cross multiply
    104,729.55x = 156,952.65 × 75,081.93
  4. Step 4: Simplify right side
    104,729.55x = 11,784,307,880.61
  5. Step 5: Solve for x
    x = 11,784,307,880.61/104,729.55
  6. Step 6: Final answer
    x = 112,521.33

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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.