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Finding the Fourth Proportional to 142,786.80, 214,180.20 and 59,680.80

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Solution

The fourth proportional to 142,786.80, 214,180.20 and 59,680.80 is: 89,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,786.80 : 214,180.20 = 59,680.80 : x
  2. Step 2: Convert to fraction form
    142,786.80/214,180.20 = 59,680.80/x
  3. Step 3: Cross multiply
    142,786.80x = 214,180.20 × 59,680.80
  4. Step 4: Simplify right side
    142,786.80x = 12,782,445,680.16
  5. Step 5: Solve for x
    x = 12,782,445,680.16/142,786.80
  6. Step 6: Final answer
    x = 89,521.20

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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.