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Finding the Fourth Proportional to 591,640.20, 887,460.30 and 585,419.40

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Solution

The fourth proportional to 591,640.20, 887,460.30 and 585,419.40 is: 878,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,640.20 : 887,460.30 = 585,419.40 : x
  2. Step 2: Convert to fraction form
    591,640.20/887,460.30 = 585,419.40/x
  3. Step 3: Cross multiply
    591,640.20x = 887,460.30 × 585,419.40
  4. Step 4: Simplify right side
    591,640.20x = 519,536,476,349.82
  5. Step 5: Solve for x
    x = 519,536,476,349.82/591,640.20
  6. Step 6: Final answer
    x = 878,129.10

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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.