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Finding the Fourth Proportional to 656,379.60, 984,569.40 and 551,403.60

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Solution

The fourth proportional to 656,379.60, 984,569.40 and 551,403.60 is: 827,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,379.60 : 984,569.40 = 551,403.60 : x
  2. Step 2: Convert to fraction form
    656,379.60/984,569.40 = 551,403.60/x
  3. Step 3: Cross multiply
    656,379.60x = 984,569.40 × 551,403.60
  4. Step 4: Simplify right side
    656,379.60x = 542,895,111,609.84
  5. Step 5: Solve for x
    x = 542,895,111,609.84/656,379.60
  6. Step 6: Final answer
    x = 827,105.40

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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.