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Finding the Fourth Proportional to 543,237.30, 814,855.95 and 520,200.90

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Solution

The fourth proportional to 543,237.30, 814,855.95 and 520,200.90 is: 780,301.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,237.30 : 814,855.95 = 520,200.90 : x
  2. Step 2: Convert to fraction form
    543,237.30/814,855.95 = 520,200.90/x
  3. Step 3: Cross multiply
    543,237.30x = 814,855.95 × 520,200.90
  4. Step 4: Simplify right side
    543,237.30x = 423,888,798,560.36
  5. Step 5: Solve for x
    x = 423,888,798,560.36/543,237.30
  6. Step 6: Final answer
    x = 780,301.35

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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.