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Finding the Fourth Proportional to 98,867.80, 148,301.70 and 92,258.20

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Solution

The fourth proportional to 98,867.80, 148,301.70 and 92,258.20 is: 138,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,867.80 : 148,301.70 = 92,258.20 : x
  2. Step 2: Convert to fraction form
    98,867.80/148,301.70 = 92,258.20/x
  3. Step 3: Cross multiply
    98,867.80x = 148,301.70 × 92,258.20
  4. Step 4: Simplify right side
    98,867.80x = 13,682,047,898.94
  5. Step 5: Solve for x
    x = 13,682,047,898.94/98,867.80
  6. Step 6: Final answer
    x = 138,387.30

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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.