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Finding the Fourth Proportional to 627,743.80, 941,615.70 and 579,820.60

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Solution

The fourth proportional to 627,743.80, 941,615.70 and 579,820.60 is: 869,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,743.80 : 941,615.70 = 579,820.60 : x
  2. Step 2: Convert to fraction form
    627,743.80/941,615.70 = 579,820.60/x
  3. Step 3: Cross multiply
    627,743.80x = 941,615.70 × 579,820.60
  4. Step 4: Simplify right side
    627,743.80x = 545,968,180,143.42
  5. Step 5: Solve for x
    x = 545,968,180,143.42/627,743.80
  6. Step 6: Final answer
    x = 869,730.90

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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.