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Finding the Fourth Proportional to 543,153.80, 814,730.70 and 291,211.40

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Solution

The fourth proportional to 543,153.80, 814,730.70 and 291,211.40 is: 436,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,153.80 : 814,730.70 = 291,211.40 : x
  2. Step 2: Convert to fraction form
    543,153.80/814,730.70 = 291,211.40/x
  3. Step 3: Cross multiply
    543,153.80x = 814,730.70 × 291,211.40
  4. Step 4: Simplify right side
    543,153.80x = 237,258,867,769.98
  5. Step 5: Solve for x
    x = 237,258,867,769.98/543,153.80
  6. Step 6: Final answer
    x = 436,817.10

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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.