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Finding the Fourth Proportional to 367,215.61, 550,771.56 and 117,865.21

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Solution

The fourth proportional to 367,215.61, 550,771.56 and 117,865.21 is: 176,781.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,215.61 : 550,771.56 = 117,865.21 : x
  2. Step 2: Convert to fraction form
    367,215.61/550,771.56 = 117,865.21/x
  3. Step 3: Cross multiply
    367,215.61x = 550,771.56 × 117,865.21
  4. Step 4: Simplify right side
    367,215.61x = 64,916,805,581.43
  5. Step 5: Solve for x
    x = 64,916,805,581.43/367,215.61
  6. Step 6: Final answer
    x = 176,781.17

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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.