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Finding the Fourth Proportional to 627,740.80, 941,611.20 and 579,817.60

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Solution

The fourth proportional to 627,740.80, 941,611.20 and 579,817.60 is: 869,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,740.80 : 941,611.20 = 579,817.60 : x
  2. Step 2: Convert to fraction form
    627,740.80/941,611.20 = 579,817.60/x
  3. Step 3: Cross multiply
    627,740.80x = 941,611.20 × 579,817.60
  4. Step 4: Simplify right side
    627,740.80x = 545,962,746,117.12
  5. Step 5: Solve for x
    x = 545,962,746,117.12/627,740.80
  6. Step 6: Final answer
    x = 869,726.40

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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.