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Finding the Fourth Proportional to 111,399.93, 153,732.11 and 61,099.29

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Solution

The fourth proportional to 111,399.93, 153,732.11 and 61,099.29 is: 84,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,399.93 : 153,732.11 = 61,099.29 : x
  2. Step 2: Convert to fraction form
    111,399.93/153,732.11 = 61,099.29/x
  3. Step 3: Cross multiply
    111,399.93x = 153,732.11 × 61,099.29
  4. Step 4: Simplify right side
    111,399.93x = 9,392,922,465.71
  5. Step 5: Solve for x
    x = 9,392,922,465.71/111,399.93
  6. Step 6: Final answer
    x = 84,317.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.