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Finding the Fourth Proportional to 98,371.60, 147,576.60 and 42,211.60

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Solution

The fourth proportional to 98,371.60, 147,576.60 and 42,211.60 is: 63,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,371.60 : 147,576.60 = 42,211.60 : x
  2. Step 2: Convert to fraction form
    98,371.60/147,576.60 = 42,211.60/x
  3. Step 3: Cross multiply
    98,371.60x = 147,576.60 × 42,211.60
  4. Step 4: Simplify right side
    98,371.60x = 6,229,444,408.56
  5. Step 5: Solve for x
    x = 6,229,444,408.56/98,371.60
  6. Step 6: Final answer
    x = 63,325.64

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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.