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Finding the Fourth Proportional to 113,859.20, 170,644.80 and 43,644.80

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Solution

The fourth proportional to 113,859.20, 170,644.80 and 43,644.80 is: 65,412.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,859.20 : 170,644.80 = 43,644.80 : x
  2. Step 2: Convert to fraction form
    113,859.20/170,644.80 = 43,644.80/x
  3. Step 3: Cross multiply
    113,859.20x = 170,644.80 × 43,644.80
  4. Step 4: Simplify right side
    113,859.20x = 7,447,758,167.04
  5. Step 5: Solve for x
    x = 7,447,758,167.04/113,859.20
  6. Step 6: Final answer
    x = 65,412.00

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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.