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Finding the Fourth Proportional to 404,232.20, 606,434.70 and 123,777.80

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Solution

The fourth proportional to 404,232.20, 606,434.70 and 123,777.80 is: 185,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,232.20 : 606,434.70 = 123,777.80 : x
  2. Step 2: Convert to fraction form
    404,232.20/606,434.70 = 123,777.80/x
  3. Step 3: Cross multiply
    404,232.20x = 606,434.70 × 123,777.80
  4. Step 4: Simplify right side
    404,232.20x = 75,063,153,009.66
  5. Step 5: Solve for x
    x = 75,063,153,009.66/404,232.20
  6. Step 6: Final answer
    x = 185,693.16

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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.