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Finding the Fourth Proportional to 511,545.60, 767,318.40 and 432,813.60

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Solution

The fourth proportional to 511,545.60, 767,318.40 and 432,813.60 is: 649,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,545.60 : 767,318.40 = 432,813.60 : x
  2. Step 2: Convert to fraction form
    511,545.60/767,318.40 = 432,813.60/x
  3. Step 3: Cross multiply
    511,545.60x = 767,318.40 × 432,813.60
  4. Step 4: Simplify right side
    511,545.60x = 332,105,839,050.24
  5. Step 5: Solve for x
    x = 332,105,839,050.24/511,545.60
  6. Step 6: Final answer
    x = 649,220.40

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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.