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Finding the Fourth Proportional to 98,722.80, 148,084.20 and 92,113.20

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Solution

The fourth proportional to 98,722.80, 148,084.20 and 92,113.20 is: 138,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,722.80 : 148,084.20 = 92,113.20 : x
  2. Step 2: Convert to fraction form
    98,722.80/148,084.20 = 92,113.20/x
  3. Step 3: Cross multiply
    98,722.80x = 148,084.20 × 92,113.20
  4. Step 4: Simplify right side
    98,722.80x = 13,640,509,531.44
  5. Step 5: Solve for x
    x = 13,640,509,531.44/98,722.80
  6. Step 6: Final answer
    x = 138,169.80

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1.5x scale

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.