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Finding the Fourth Proportional to 468,979.76, 703,463.28 and 113,992.72

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Solution

The fourth proportional to 468,979.76, 703,463.28 and 113,992.72 is: 170,987.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,979.76 : 703,463.28 = 113,992.72 : x
  2. Step 2: Convert to fraction form
    468,979.76/703,463.28 = 113,992.72/x
  3. Step 3: Cross multiply
    468,979.76x = 703,463.28 × 113,992.72
  4. Step 4: Simplify right side
    468,979.76x = 80,189,692,707.32
  5. Step 5: Solve for x
    x = 80,189,692,707.32/468,979.76
  6. Step 6: Final answer
    x = 170,987.53

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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.