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Finding the Fourth Proportional to 325,171.89, 487,549.71 and 156,356.01

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Solution

The fourth proportional to 325,171.89, 487,549.71 and 156,356.01 is: 234,433.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,171.89 : 487,549.71 = 156,356.01 : x
  2. Step 2: Convert to fraction form
    325,171.89/487,549.71 = 156,356.01/x
  3. Step 3: Cross multiply
    325,171.89x = 487,549.71 × 156,356.01
  4. Step 4: Simplify right side
    325,171.89x = 76,231,327,332.26
  5. Step 5: Solve for x
    x = 76,231,327,332.26/325,171.89
  6. Step 6: Final answer
    x = 234,433.94

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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.