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Finding the Fourth Proportional to 171,696.40, 257,836.20 and 127,373.20

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Solution

The fourth proportional to 171,696.40, 257,836.20 and 127,373.20 is: 191,276.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,696.40 : 257,836.20 = 127,373.20 : x
  2. Step 2: Convert to fraction form
    171,696.40/257,836.20 = 127,373.20/x
  3. Step 3: Cross multiply
    171,696.40x = 257,836.20 × 127,373.20
  4. Step 4: Simplify right side
    171,696.40x = 32,841,421,869.84
  5. Step 5: Solve for x
    x = 32,841,421,869.84/171,696.40
  6. Step 6: Final answer
    x = 191,276.12

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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.