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Finding the Fourth Proportional to 115,309.44, 172,985.76 and 36,443.52

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Solution

The fourth proportional to 115,309.44, 172,985.76 and 36,443.52 is: 54,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,309.44 : 172,985.76 = 36,443.52 : x
  2. Step 2: Convert to fraction form
    115,309.44/172,985.76 = 36,443.52/x
  3. Step 3: Cross multiply
    115,309.44x = 172,985.76 × 36,443.52
  4. Step 4: Simplify right side
    115,309.44x = 6,304,210,004.28
  5. Step 5: Solve for x
    x = 6,304,210,004.28/115,309.44
  6. Step 6: Final answer
    x = 54,672.11

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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.