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Finding the Fourth Proportional to 392,455.80, 588,683.70 and 96,967.80

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Solution

The fourth proportional to 392,455.80, 588,683.70 and 96,967.80 is: 145,451.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,455.80 : 588,683.70 = 96,967.80 : x
  2. Step 2: Convert to fraction form
    392,455.80/588,683.70 = 96,967.80/x
  3. Step 3: Cross multiply
    392,455.80x = 588,683.70 × 96,967.80
  4. Step 4: Simplify right side
    392,455.80x = 57,083,363,284.86
  5. Step 5: Solve for x
    x = 57,083,363,284.86/392,455.80
  6. Step 6: Final answer
    x = 145,451.70

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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.