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Finding the Fourth Proportional to 541,254.30, 811,881.45 and 260,799.90

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Solution

The fourth proportional to 541,254.30, 811,881.45 and 260,799.90 is: 391,199.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,254.30 : 811,881.45 = 260,799.90 : x
  2. Step 2: Convert to fraction form
    541,254.30/811,881.45 = 260,799.90/x
  3. Step 3: Cross multiply
    541,254.30x = 811,881.45 × 260,799.90
  4. Step 4: Simplify right side
    541,254.30x = 211,738,600,971.86
  5. Step 5: Solve for x
    x = 211,738,600,971.86/541,254.30
  6. Step 6: Final answer
    x = 391,199.85

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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.