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Finding the Fourth Proportional to 573,905.20, 860,857.80 and 147,440.20

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Solution

The fourth proportional to 573,905.20, 860,857.80 and 147,440.20 is: 221,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,905.20 : 860,857.80 = 147,440.20 : x
  2. Step 2: Convert to fraction form
    573,905.20/860,857.80 = 147,440.20/x
  3. Step 3: Cross multiply
    573,905.20x = 860,857.80 × 147,440.20
  4. Step 4: Simplify right side
    573,905.20x = 126,925,046,203.56
  5. Step 5: Solve for x
    x = 126,925,046,203.56/573,905.20
  6. Step 6: Final answer
    x = 221,160.30

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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.