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Finding the Fourth Proportional to 521,217, 781,827.12 and 127,233

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Solution

The fourth proportional to 521,217, 781,827.12 and 127,233 is: 190,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,217 : 781,827.12 = 127,233 : x
  2. Step 2: Convert to fraction form
    521,217/781,827.12 = 127,233/x
  3. Step 3: Cross multiply
    521,217x = 781,827.12 × 127,233
  4. Step 4: Simplify right side
    521,217x = 99,474,209,958.96
  5. Step 5: Solve for x
    x = 99,474,209,958.96/521,217
  6. Step 6: Final answer
    x = 190,849.90

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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.