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Finding the Fourth Proportional to 115,276.40, 173,303.40 and 98,169.20

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Solution

The fourth proportional to 115,276.40, 173,303.40 and 98,169.20 is: 147,584.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,276.40 : 173,303.40 = 98,169.20 : x
  2. Step 2: Convert to fraction form
    115,276.40/173,303.40 = 98,169.20/x
  3. Step 3: Cross multiply
    115,276.40x = 173,303.40 × 98,169.20
  4. Step 4: Simplify right side
    115,276.40x = 17,013,056,135.28
  5. Step 5: Solve for x
    x = 17,013,056,135.28/115,276.40
  6. Step 6: Final answer
    x = 147,584.90

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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.