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Finding the Fourth Proportional to 444,858.67, 667,386.02 and 129,340.18

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Solution

The fourth proportional to 444,858.67, 667,386.02 and 129,340.18 is: 194,038.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,858.67 : 667,386.02 = 129,340.18 : x
  2. Step 2: Convert to fraction form
    444,858.67/667,386.02 = 129,340.18/x
  3. Step 3: Cross multiply
    444,858.67x = 667,386.02 × 129,340.18
  4. Step 4: Simplify right side
    444,858.67x = 86,319,827,956.28
  5. Step 5: Solve for x
    x = 86,319,827,956.28/444,858.67
  6. Step 6: Final answer
    x = 194,038.77

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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.