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Finding the Fourth Proportional to 1,191,154.86, 1,786,343.49 and 392,248.62

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Solution

The fourth proportional to 1,191,154.86, 1,786,343.49 and 392,248.62 is: 588,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,154.86 : 1,786,343.49 = 392,248.62 : x
  2. Step 2: Convert to fraction form
    1,191,154.86/1,786,343.49 = 392,248.62/x
  3. Step 3: Cross multiply
    1,191,154.86x = 1,786,343.49 × 392,248.62
  4. Step 4: Simplify right side
    1,191,154.86x = 700,690,768,798.48
  5. Step 5: Solve for x
    x = 700,690,768,798.48/1,191,154.86
  6. Step 6: Final answer
    x = 588,244.90

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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.