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Finding the Fourth Proportional to 171,657.90, 257,778.45 and 127,334.70

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Solution

The fourth proportional to 171,657.90, 257,778.45 and 127,334.70 is: 191,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,657.90 : 257,778.45 = 127,334.70 : x
  2. Step 2: Convert to fraction form
    171,657.90/257,778.45 = 127,334.70/x
  3. Step 3: Cross multiply
    171,657.90x = 257,778.45 × 127,334.70
  4. Step 4: Simplify right side
    171,657.90x = 32,824,141,597.22
  5. Step 5: Solve for x
    x = 32,824,141,597.22/171,657.90
  6. Step 6: Final answer
    x = 191,218.36

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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.