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Finding the Fourth Proportional to 117,390.80, 176,021.40 and 38,464.40

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Solution

The fourth proportional to 117,390.80, 176,021.40 and 38,464.40 is: 57,675.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,390.80 : 176,021.40 = 38,464.40 : x
  2. Step 2: Convert to fraction form
    117,390.80/176,021.40 = 38,464.40/x
  3. Step 3: Cross multiply
    117,390.80x = 176,021.40 × 38,464.40
  4. Step 4: Simplify right side
    117,390.80x = 6,770,557,538.16
  5. Step 5: Solve for x
    x = 6,770,557,538.16/117,390.80
  6. Step 6: Final answer
    x = 57,675.37

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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.