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Finding the Fourth Proportional to 98,675.70, 136,171.17 and 53,963.70

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Solution

The fourth proportional to 98,675.70, 136,171.17 and 53,963.70 is: 74,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,675.70 : 136,171.17 = 53,963.70 : x
  2. Step 2: Convert to fraction form
    98,675.70/136,171.17 = 53,963.70/x
  3. Step 3: Cross multiply
    98,675.70x = 136,171.17 × 53,963.70
  4. Step 4: Simplify right side
    98,675.70x = 7,348,300,166.53
  5. Step 5: Solve for x
    x = 7,348,300,166.53/98,675.70
  6. Step 6: Final answer
    x = 74,469.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.