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Finding the Fourth Proportional to 607,713.20, 911,569.80 and 439,751.60

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Solution

The fourth proportional to 607,713.20, 911,569.80 and 439,751.60 is: 659,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,713.20 : 911,569.80 = 439,751.60 : x
  2. Step 2: Convert to fraction form
    607,713.20/911,569.80 = 439,751.60/x
  3. Step 3: Cross multiply
    607,713.20x = 911,569.80 × 439,751.60
  4. Step 4: Simplify right side
    607,713.20x = 400,864,278,061.68
  5. Step 5: Solve for x
    x = 400,864,278,061.68/607,713.20
  6. Step 6: Final answer
    x = 659,627.40

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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.