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Finding the Fourth Proportional to 539,565.40, 809,348.10 and 434,589.40

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Solution

The fourth proportional to 539,565.40, 809,348.10 and 434,589.40 is: 651,884.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,565.40 : 809,348.10 = 434,589.40 : x
  2. Step 2: Convert to fraction form
    539,565.40/809,348.10 = 434,589.40/x
  3. Step 3: Cross multiply
    539,565.40x = 809,348.10 × 434,589.40
  4. Step 4: Simplify right side
    539,565.40x = 351,734,105,170.14
  5. Step 5: Solve for x
    x = 351,734,105,170.14/539,565.40
  6. Step 6: Final answer
    x = 651,884.10

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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.