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Finding the Fourth Proportional to 170,732.40, 255,772.20 and 91,820.40

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Solution

The fourth proportional to 170,732.40, 255,772.20 and 91,820.40 is: 137,555.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,732.40 : 255,772.20 = 91,820.40 : x
  2. Step 2: Convert to fraction form
    170,732.40/255,772.20 = 91,820.40/x
  3. Step 3: Cross multiply
    170,732.40x = 255,772.20 × 91,820.40
  4. Step 4: Simplify right side
    170,732.40x = 23,485,105,712.88
  5. Step 5: Solve for x
    x = 23,485,105,712.88/170,732.40
  6. Step 6: Final answer
    x = 137,555.06

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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.