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Finding the Fourth Proportional to 514,423.80, 771,635.70 and 159,546.60

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Solution

The fourth proportional to 514,423.80, 771,635.70 and 159,546.60 is: 239,319.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,423.80 : 771,635.70 = 159,546.60 : x
  2. Step 2: Convert to fraction form
    514,423.80/771,635.70 = 159,546.60/x
  3. Step 3: Cross multiply
    514,423.80x = 771,635.70 × 159,546.60
  4. Step 4: Simplify right side
    514,423.80x = 123,111,852,373.62
  5. Step 5: Solve for x
    x = 123,111,852,373.62/514,423.80
  6. Step 6: Final answer
    x = 239,319.90

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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.