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Finding the Fourth Proportional to 91,392.80, 137,089.20 and 32,295.20

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Solution

The fourth proportional to 91,392.80, 137,089.20 and 32,295.20 is: 48,442.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,392.80 : 137,089.20 = 32,295.20 : x
  2. Step 2: Convert to fraction form
    91,392.80/137,089.20 = 32,295.20/x
  3. Step 3: Cross multiply
    91,392.80x = 137,089.20 × 32,295.20
  4. Step 4: Simplify right side
    91,392.80x = 4,427,323,131.84
  5. Step 5: Solve for x
    x = 4,427,323,131.84/91,392.80
  6. Step 6: Final answer
    x = 48,442.80

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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.