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Finding the Fourth Proportional to 111,569.56, 153,969.54 and 61,268.56

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Solution

The fourth proportional to 111,569.56, 153,969.54 and 61,268.56 is: 84,552.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,569.56 : 153,969.54 = 61,268.56 : x
  2. Step 2: Convert to fraction form
    111,569.56/153,969.54 = 61,268.56/x
  3. Step 3: Cross multiply
    111,569.56x = 153,969.54 × 61,268.56
  4. Step 4: Simplify right side
    111,569.56x = 9,433,491,999.66
  5. Step 5: Solve for x
    x = 9,433,491,999.66/111,569.56
  6. Step 6: Final answer
    x = 84,552.56

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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.