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Finding the Fourth Proportional to 587,432.80, 881,149.20 and 557,106.40

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Solution

The fourth proportional to 587,432.80, 881,149.20 and 557,106.40 is: 835,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,432.80 : 881,149.20 = 557,106.40 : x
  2. Step 2: Convert to fraction form
    587,432.80/881,149.20 = 557,106.40/x
  3. Step 3: Cross multiply
    587,432.80x = 881,149.20 × 557,106.40
  4. Step 4: Simplify right side
    587,432.80x = 490,893,858,674.88
  5. Step 5: Solve for x
    x = 490,893,858,674.88/587,432.80
  6. Step 6: Final answer
    x = 835,659.60

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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.