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Finding the Fourth Proportional to 626,863.20, 940,294.80 and 153,553.20

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Solution

The fourth proportional to 626,863.20, 940,294.80 and 153,553.20 is: 230,329.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,863.20 : 940,294.80 = 153,553.20 : x
  2. Step 2: Convert to fraction form
    626,863.20/940,294.80 = 153,553.20/x
  3. Step 3: Cross multiply
    626,863.20x = 940,294.80 × 153,553.20
  4. Step 4: Simplify right side
    626,863.20x = 144,385,275,483.36
  5. Step 5: Solve for x
    x = 144,385,275,483.36/626,863.20
  6. Step 6: Final answer
    x = 230,329.80

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Double scale
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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.