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Finding the Fourth Proportional to 391,398.31, 586,912.42 and 151,624.51

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Solution

The fourth proportional to 391,398.31, 586,912.42 and 151,624.51 is: 227,365.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,398.31 : 586,912.42 = 151,624.51 : x
  2. Step 2: Convert to fraction form
    391,398.31/586,912.42 = 151,624.51/x
  3. Step 3: Cross multiply
    391,398.31x = 586,912.42 × 151,624.51
  4. Step 4: Simplify right side
    391,398.31x = 88,990,308,095.41
  5. Step 5: Solve for x
    x = 88,990,308,095.41/391,398.31
  6. Step 6: Final answer
    x = 227,365.08

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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.