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Finding the Fourth Proportional to 543,269.70, 814,904.55 and 143,972.10

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Solution

The fourth proportional to 543,269.70, 814,904.55 and 143,972.10 is: 215,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,269.70 : 814,904.55 = 143,972.10 : x
  2. Step 2: Convert to fraction form
    543,269.70/814,904.55 = 143,972.10/x
  3. Step 3: Cross multiply
    543,269.70x = 814,904.55 × 143,972.10
  4. Step 4: Simplify right side
    543,269.70x = 117,323,519,363.06
  5. Step 5: Solve for x
    x = 117,323,519,363.06/543,269.70
  6. Step 6: Final answer
    x = 215,958.15

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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.