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Finding the Fourth Proportional to 508,918.40, 763,377.60 and 482,674.40

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Solution

The fourth proportional to 508,918.40, 763,377.60 and 482,674.40 is: 724,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,918.40 : 763,377.60 = 482,674.40 : x
  2. Step 2: Convert to fraction form
    508,918.40/763,377.60 = 482,674.40/x
  3. Step 3: Cross multiply
    508,918.40x = 763,377.60 × 482,674.40
  4. Step 4: Simplify right side
    508,918.40x = 368,462,825,053.44
  5. Step 5: Solve for x
    x = 368,462,825,053.44/508,918.40
  6. Step 6: Final answer
    x = 724,011.60

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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.