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Finding the Fourth Proportional to 91,308.38, 136,773.88 and 53,752.74

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Solution

The fourth proportional to 91,308.38, 136,773.88 and 53,752.74 is: 80,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,308.38 : 136,773.88 = 53,752.74 : x
  2. Step 2: Convert to fraction form
    91,308.38/136,773.88 = 53,752.74/x
  3. Step 3: Cross multiply
    91,308.38x = 136,773.88 × 53,752.74
  4. Step 4: Simplify right side
    91,308.38x = 7,351,970,810.43
  5. Step 5: Solve for x
    x = 7,351,970,810.43/91,308.38
  6. Step 6: Final answer
    x = 80,518.03

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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.