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Finding the Fourth Proportional to 98,601.40, 147,902.10 and 73,815.40

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Solution

The fourth proportional to 98,601.40, 147,902.10 and 73,815.40 is: 110,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,601.40 : 147,902.10 = 73,815.40 : x
  2. Step 2: Convert to fraction form
    98,601.40/147,902.10 = 73,815.40/x
  3. Step 3: Cross multiply
    98,601.40x = 147,902.10 × 73,815.40
  4. Step 4: Simplify right side
    98,601.40x = 10,917,452,672.34
  5. Step 5: Solve for x
    x = 10,917,452,672.34/98,601.40
  6. Step 6: Final answer
    x = 110,723.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.