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Finding the Fourth Proportional to 171,490.90, 257,527.95 and 127,167.70

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Solution

The fourth proportional to 171,490.90, 257,527.95 and 127,167.70 is: 190,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,490.90 : 257,527.95 = 127,167.70 : x
  2. Step 2: Convert to fraction form
    171,490.90/257,527.95 = 127,167.70/x
  3. Step 3: Cross multiply
    171,490.90x = 257,527.95 × 127,167.70
  4. Step 4: Simplify right side
    171,490.90x = 32,749,237,087.22
  5. Step 5: Solve for x
    x = 32,749,237,087.22/171,490.90
  6. Step 6: Final answer
    x = 190,967.78

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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.