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Finding the Fourth Proportional to 626,738.60, 940,107.90 and 153,417.80

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Solution

The fourth proportional to 626,738.60, 940,107.90 and 153,417.80 is: 230,126.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,738.60 : 940,107.90 = 153,417.80 : x
  2. Step 2: Convert to fraction form
    626,738.60/940,107.90 = 153,417.80/x
  3. Step 3: Cross multiply
    626,738.60x = 940,107.90 × 153,417.80
  4. Step 4: Simplify right side
    626,738.60x = 144,229,285,780.62
  5. Step 5: Solve for x
    x = 144,229,285,780.62/626,738.60
  6. Step 6: Final answer
    x = 230,126.70

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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.