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Finding the Fourth Proportional to 117,720.88, 176,603.04 and 38,840.56

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Solution

The fourth proportional to 117,720.88, 176,603.04 and 38,840.56 is: 58,268.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,720.88 : 176,603.04 = 38,840.56 : x
  2. Step 2: Convert to fraction form
    117,720.88/176,603.04 = 38,840.56/x
  3. Step 3: Cross multiply
    117,720.88x = 176,603.04 × 38,840.56
  4. Step 4: Simplify right side
    117,720.88x = 6,859,360,971.30
  5. Step 5: Solve for x
    x = 6,859,360,971.30/117,720.88
  6. Step 6: Final answer
    x = 58,268.01

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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.