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Finding the Fourth Proportional to 109,628.88, 151,276.92 and 61,873.01

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Solution

The fourth proportional to 109,628.88, 151,276.92 and 61,873.01 is: 85,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,628.88 : 151,276.92 = 61,873.01 : x
  2. Step 2: Convert to fraction form
    109,628.88/151,276.92 = 61,873.01/x
  3. Step 3: Cross multiply
    109,628.88x = 151,276.92 × 61,873.01
  4. Step 4: Simplify right side
    109,628.88x = 9,359,957,627.54
  5. Step 5: Solve for x
    x = 9,359,957,627.54/109,628.88
  6. Step 6: Final answer
    x = 85,378.58

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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.