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Finding the Fourth Proportional to 587,713.70, 881,570.55 and 398,756.90

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Solution

The fourth proportional to 587,713.70, 881,570.55 and 398,756.90 is: 598,135.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,713.70 : 881,570.55 = 398,756.90 : x
  2. Step 2: Convert to fraction form
    587,713.70/881,570.55 = 398,756.90/x
  3. Step 3: Cross multiply
    587,713.70x = 881,570.55 × 398,756.90
  4. Step 4: Simplify right side
    587,713.70x = 351,532,339,649.30
  5. Step 5: Solve for x
    x = 351,532,339,649.30/587,713.70
  6. Step 6: Final answer
    x = 598,135.35

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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.