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Finding the Fourth Proportional to 98,372.40, 147,477.60 and 42,255.60

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Solution

The fourth proportional to 98,372.40, 147,477.60 and 42,255.60 is: 63,348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,372.40 : 147,477.60 = 42,255.60 : x
  2. Step 2: Convert to fraction form
    98,372.40/147,477.60 = 42,255.60/x
  3. Step 3: Cross multiply
    98,372.40x = 147,477.60 × 42,255.60
  4. Step 4: Simplify right side
    98,372.40x = 6,231,754,474.56
  5. Step 5: Solve for x
    x = 6,231,754,474.56/98,372.40
  6. Step 6: Final answer
    x = 63,348.61

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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.