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Finding the Fourth Proportional to 587,412.80, 881,119.20 and 557,086.40

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Solution

The fourth proportional to 587,412.80, 881,119.20 and 557,086.40 is: 835,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,412.80 : 881,119.20 = 557,086.40 : x
  2. Step 2: Convert to fraction form
    587,412.80/881,119.20 = 557,086.40/x
  3. Step 3: Cross multiply
    587,412.80x = 881,119.20 × 557,086.40
  4. Step 4: Simplify right side
    587,412.80x = 490,859,523,098.88
  5. Step 5: Solve for x
    x = 490,859,523,098.88/587,412.80
  6. Step 6: Final answer
    x = 835,629.60

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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.