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Finding the Fourth Proportional to 91,244.80, 136,953.60 and 56,252.80

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Solution

The fourth proportional to 91,244.80, 136,953.60 and 56,252.80 is: 84,432.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,244.80 : 136,953.60 = 56,252.80 : x
  2. Step 2: Convert to fraction form
    91,244.80/136,953.60 = 56,252.80/x
  3. Step 3: Cross multiply
    91,244.80x = 136,953.60 × 56,252.80
  4. Step 4: Simplify right side
    91,244.80x = 7,704,023,470.08
  5. Step 5: Solve for x
    x = 7,704,023,470.08/91,244.80
  6. Step 6: Final answer
    x = 84,432.47

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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.