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Finding the Fourth Proportional to 111,567.78, 153,963.79 and 60,580.51

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Solution

The fourth proportional to 111,567.78, 153,963.79 and 60,580.51 is: 83,601.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,567.78 : 153,963.79 = 60,580.51 : x
  2. Step 2: Convert to fraction form
    111,567.78/153,963.79 = 60,580.51/x
  3. Step 3: Cross multiply
    111,567.78x = 153,963.79 × 60,580.51
  4. Step 4: Simplify right side
    111,567.78x = 9,327,204,383.37
  5. Step 5: Solve for x
    x = 9,327,204,383.37/111,567.78
  6. Step 6: Final answer
    x = 83,601.24

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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.