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Finding the Fourth Proportional to 110,116.67, 151,959.29 and 61,718.51

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Solution

The fourth proportional to 110,116.67, 151,959.29 and 61,718.51 is: 85,170.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,116.67 : 151,959.29 = 61,718.51 : x
  2. Step 2: Convert to fraction form
    110,116.67/151,959.29 = 61,718.51/x
  3. Step 3: Cross multiply
    110,116.67x = 151,959.29 × 61,718.51
  4. Step 4: Simplify right side
    110,116.67x = 9,378,700,523.16
  5. Step 5: Solve for x
    x = 9,378,700,523.16/110,116.67
  6. Step 6: Final answer
    x = 85,170.58

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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.