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Finding the Fourth Proportional to 117,308.88, 175,945.50 and 38,421.36

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Solution

The fourth proportional to 117,308.88, 175,945.50 and 38,421.36 is: 57,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,308.88 : 175,945.50 = 38,421.36 : x
  2. Step 2: Convert to fraction form
    117,308.88/175,945.50 = 38,421.36/x
  3. Step 3: Cross multiply
    117,308.88x = 175,945.50 × 38,421.36
  4. Step 4: Simplify right side
    117,308.88x = 6,760,065,395.88
  5. Step 5: Solve for x
    x = 6,760,065,395.88/117,308.88
  6. Step 6: Final answer
    x = 57,626.20

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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.