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Finding the Fourth Proportional to 569,985.80, 854,978.70 and 149,304.20

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Solution

The fourth proportional to 569,985.80, 854,978.70 and 149,304.20 is: 223,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,985.80 : 854,978.70 = 149,304.20 : x
  2. Step 2: Convert to fraction form
    569,985.80/854,978.70 = 149,304.20/x
  3. Step 3: Cross multiply
    569,985.80x = 854,978.70 × 149,304.20
  4. Step 4: Simplify right side
    569,985.80x = 127,651,910,820.54
  5. Step 5: Solve for x
    x = 127,651,910,820.54/569,985.80
  6. Step 6: Final answer
    x = 223,956.30

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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.