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Finding the Fourth Proportional to 391,330.54, 586,857.56 and 186,141.04

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Solution

The fourth proportional to 391,330.54, 586,857.56 and 186,141.04 is: 279,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,330.54 : 586,857.56 = 186,141.04 : x
  2. Step 2: Convert to fraction form
    391,330.54/586,857.56 = 186,141.04/x
  3. Step 3: Cross multiply
    391,330.54x = 586,857.56 × 186,141.04
  4. Step 4: Simplify right side
    391,330.54x = 109,238,274,152.41
  5. Step 5: Solve for x
    x = 109,238,274,152.41/391,330.54
  6. Step 6: Final answer
    x = 279,145.79

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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.