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Finding the Fourth Proportional to 98,232.60, 147,348.90 and 84,869.40

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Solution

The fourth proportional to 98,232.60, 147,348.90 and 84,869.40 is: 127,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,232.60 : 147,348.90 = 84,869.40 : x
  2. Step 2: Convert to fraction form
    98,232.60/147,348.90 = 84,869.40/x
  3. Step 3: Cross multiply
    98,232.60x = 147,348.90 × 84,869.40
  4. Step 4: Simplify right side
    98,232.60x = 12,505,412,733.66
  5. Step 5: Solve for x
    x = 12,505,412,733.66/98,232.60
  6. Step 6: Final answer
    x = 127,304.10

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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.