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Finding the Fourth Proportional to 91,853.80, 137,780.70 and 32,756.20

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Solution

The fourth proportional to 91,853.80, 137,780.70 and 32,756.20 is: 49,134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,853.80 : 137,780.70 = 32,756.20 : x
  2. Step 2: Convert to fraction form
    91,853.80/137,780.70 = 32,756.20/x
  3. Step 3: Cross multiply
    91,853.80x = 137,780.70 × 32,756.20
  4. Step 4: Simplify right side
    91,853.80x = 4,513,172,165.34
  5. Step 5: Solve for x
    x = 4,513,172,165.34/91,853.80
  6. Step 6: Final answer
    x = 49,134.30

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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.