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Finding the Fourth Proportional to 109,258.93, 150,791.69 and 61,521.58

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Solution

The fourth proportional to 109,258.93, 150,791.69 and 61,521.58 is: 84,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,258.93 : 150,791.69 = 61,521.58 : x
  2. Step 2: Convert to fraction form
    109,258.93/150,791.69 = 61,521.58/x
  3. Step 3: Cross multiply
    109,258.93x = 150,791.69 × 61,521.58
  4. Step 4: Simplify right side
    109,258.93x = 9,276,943,019.67
  5. Step 5: Solve for x
    x = 9,276,943,019.67/109,258.93
  6. Step 6: Final answer
    x = 84,907.87

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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.