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Finding the Fourth Proportional to 426,614.49, 640,060.08 and 127,097.64

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Solution

The fourth proportional to 426,614.49, 640,060.08 and 127,097.64 is: 190,687.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,614.49 : 640,060.08 = 127,097.64 : x
  2. Step 2: Convert to fraction form
    426,614.49/640,060.08 = 127,097.64/x
  3. Step 3: Cross multiply
    426,614.49x = 640,060.08 × 127,097.64
  4. Step 4: Simplify right side
    426,614.49x = 81,350,125,626.21
  5. Step 5: Solve for x
    x = 81,350,125,626.21/426,614.49
  6. Step 6: Final answer
    x = 190,687.68

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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.