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Finding the Fourth Proportional to 171,197.66, 256,657.30 and 71,432.17

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Solution

The fourth proportional to 171,197.66, 256,657.30 and 71,432.17 is: 107,090.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,197.66 : 256,657.30 = 71,432.17 : x
  2. Step 2: Convert to fraction form
    171,197.66/256,657.30 = 71,432.17/x
  3. Step 3: Cross multiply
    171,197.66x = 256,657.30 × 71,432.17
  4. Step 4: Simplify right side
    171,197.66x = 18,333,587,885.34
  5. Step 5: Solve for x
    x = 18,333,587,885.34/171,197.66
  6. Step 6: Final answer
    x = 107,090.18

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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.