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Finding the Fourth Proportional to 98,971.20, 148,359.60 and 88,473.60

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Solution

The fourth proportional to 98,971.20, 148,359.60 and 88,473.60 is: 132,623.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,971.20 : 148,359.60 = 88,473.60 : x
  2. Step 2: Convert to fraction form
    98,971.20/148,359.60 = 88,473.60/x
  3. Step 3: Cross multiply
    98,971.20x = 148,359.60 × 88,473.60
  4. Step 4: Simplify right side
    98,971.20x = 13,125,907,906.56
  5. Step 5: Solve for x
    x = 13,125,907,906.56/98,971.20
  6. Step 6: Final answer
    x = 132,623.51

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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.