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Finding the Fourth Proportional to 157,086.80, 235,630.20 and 146,718.80

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Solution

The fourth proportional to 157,086.80, 235,630.20 and 146,718.80 is: 220,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,086.80 : 235,630.20 = 146,718.80 : x
  2. Step 2: Convert to fraction form
    157,086.80/235,630.20 = 146,718.80/x
  3. Step 3: Cross multiply
    157,086.80x = 235,630.20 × 146,718.80
  4. Step 4: Simplify right side
    157,086.80x = 34,571,380,187.76
  5. Step 5: Solve for x
    x = 34,571,380,187.76/157,086.80
  6. Step 6: Final answer
    x = 220,078.20

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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.