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Finding the Fourth Proportional to 91,411.60, 137,178.60 and 32,247.40

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Solution

The fourth proportional to 91,411.60, 137,178.60 and 32,247.40 is: 48,392.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,411.60 : 137,178.60 = 32,247.40 : x
  2. Step 2: Convert to fraction form
    91,411.60/137,178.60 = 32,247.40/x
  3. Step 3: Cross multiply
    91,411.60x = 137,178.60 × 32,247.40
  4. Step 4: Simplify right side
    91,411.60x = 4,423,653,185.64
  5. Step 5: Solve for x
    x = 4,423,653,185.64/91,411.60
  6. Step 6: Final answer
    x = 48,392.69

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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.