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Finding the Fourth Proportional to 438,806.56, 658,209.72 and 106,382.56

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Solution

The fourth proportional to 438,806.56, 658,209.72 and 106,382.56 is: 159,573.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,806.56 : 658,209.72 = 106,382.56 : x
  2. Step 2: Convert to fraction form
    438,806.56/658,209.72 = 106,382.56/x
  3. Step 3: Cross multiply
    438,806.56x = 658,209.72 × 106,382.56
  4. Step 4: Simplify right side
    438,806.56x = 70,022,035,030.48
  5. Step 5: Solve for x
    x = 70,022,035,030.48/438,806.56
  6. Step 6: Final answer
    x = 159,573.81

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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.