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Finding the Fourth Proportional to 111,395.45, 153,723.62 and 62,996.54

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Solution

The fourth proportional to 111,395.45, 153,723.62 and 62,996.54 is: 86,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,395.45 : 153,723.62 = 62,996.54 : x
  2. Step 2: Convert to fraction form
    111,395.45/153,723.62 = 62,996.54/x
  3. Step 3: Cross multiply
    111,395.45x = 153,723.62 × 62,996.54
  4. Step 4: Simplify right side
    111,395.45x = 9,684,055,565.15
  5. Step 5: Solve for x
    x = 9,684,055,565.15/111,395.45
  6. Step 6: Final answer
    x = 86,934.03

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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.