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Finding the Fourth Proportional to 293,128.80, 439,693.20 and 93,463.80

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Solution

The fourth proportional to 293,128.80, 439,693.20 and 93,463.80 is: 140,195.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,128.80 : 439,693.20 = 93,463.80 : x
  2. Step 2: Convert to fraction form
    293,128.80/439,693.20 = 93,463.80/x
  3. Step 3: Cross multiply
    293,128.80x = 439,693.20 × 93,463.80
  4. Step 4: Simplify right side
    293,128.80x = 41,095,397,306.16
  5. Step 5: Solve for x
    x = 41,095,397,306.16/293,128.80
  6. Step 6: Final answer
    x = 140,195.70

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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.