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Finding the Fourth Proportional to 111,369.60, 153,687.24 and 61,068.60

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Solution

The fourth proportional to 111,369.60, 153,687.24 and 61,068.60 is: 84,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,369.60 : 153,687.24 = 61,068.60 : x
  2. Step 2: Convert to fraction form
    111,369.60/153,687.24 = 61,068.60/x
  3. Step 3: Cross multiply
    111,369.60x = 153,687.24 × 61,068.60
  4. Step 4: Simplify right side
    111,369.60x = 9,385,464,584.66
  5. Step 5: Solve for x
    x = 9,385,464,584.66/111,369.60
  6. Step 6: Final answer
    x = 84,273.13

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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.