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Finding the Fourth Proportional to 170,861.20, 256,291.80 and 99,710.80

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Solution

The fourth proportional to 170,861.20, 256,291.80 and 99,710.80 is: 149,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,861.20 : 256,291.80 = 99,710.80 : x
  2. Step 2: Convert to fraction form
    170,861.20/256,291.80 = 99,710.80/x
  3. Step 3: Cross multiply
    170,861.20x = 256,291.80 × 99,710.80
  4. Step 4: Simplify right side
    170,861.20x = 25,555,060,411.44
  5. Step 5: Solve for x
    x = 25,555,060,411.44/170,861.20
  6. Step 6: Final answer
    x = 149,566.20

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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.