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Finding the Fourth Proportional to 171,503.01, 257,117.13 and 81,500.55

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Solution

The fourth proportional to 171,503.01, 257,117.13 and 81,500.55 is: 122,185.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,503.01 : 257,117.13 = 81,500.55 : x
  2. Step 2: Convert to fraction form
    171,503.01/257,117.13 = 81,500.55/x
  3. Step 3: Cross multiply
    171,503.01x = 257,117.13 × 81,500.55
  4. Step 4: Simplify right side
    171,503.01x = 20,955,187,509.42
  5. Step 5: Solve for x
    x = 20,955,187,509.42/171,503.01
  6. Step 6: Final answer
    x = 122,185.54

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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.