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Finding the Fourth Proportional to 577,878.20, 866,817.30 and 542,886.20

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Solution

The fourth proportional to 577,878.20, 866,817.30 and 542,886.20 is: 814,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,878.20 : 866,817.30 = 542,886.20 : x
  2. Step 2: Convert to fraction form
    577,878.20/866,817.30 = 542,886.20/x
  3. Step 3: Cross multiply
    577,878.20x = 866,817.30 × 542,886.20
  4. Step 4: Simplify right side
    577,878.20x = 470,583,150,091.26
  5. Step 5: Solve for x
    x = 470,583,150,091.26/577,878.20
  6. Step 6: Final answer
    x = 814,329.30

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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.