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Finding the Fourth Proportional to 113,183.76, 169,717.32 and 77,699.28

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Solution

The fourth proportional to 113,183.76, 169,717.32 and 77,699.28 is: 116,508.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,183.76 : 169,717.32 = 77,699.28 : x
  2. Step 2: Convert to fraction form
    113,183.76/169,717.32 = 77,699.28/x
  3. Step 3: Cross multiply
    113,183.76x = 169,717.32 × 77,699.28
  4. Step 4: Simplify right side
    113,183.76x = 13,186,913,567.53
  5. Step 5: Solve for x
    x = 13,186,913,567.53/113,183.76
  6. Step 6: Final answer
    x = 116,508.88

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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.