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Finding the Fourth Proportional to 482,905.90, 724,358.85 and 127,955.80

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Solution

The fourth proportional to 482,905.90, 724,358.85 and 127,955.80 is: 191,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,905.90 : 724,358.85 = 127,955.80 : x
  2. Step 2: Convert to fraction form
    482,905.90/724,358.85 = 127,955.80/x
  3. Step 3: Cross multiply
    482,905.90x = 724,358.85 × 127,955.80
  4. Step 4: Simplify right side
    482,905.90x = 92,685,916,138.83
  5. Step 5: Solve for x
    x = 92,685,916,138.83/482,905.90
  6. Step 6: Final answer
    x = 191,933.70

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Similar ratio
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1.5x scale

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.