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Finding the Fourth Proportional to 75,603.56, 113,128.52 and 71,548.10

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Solution

The fourth proportional to 75,603.56, 113,128.52 and 71,548.10 is: 107,060.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,603.56 : 113,128.52 = 71,548.10 : x
  2. Step 2: Convert to fraction form
    75,603.56/113,128.52 = 71,548.10/x
  3. Step 3: Cross multiply
    75,603.56x = 113,128.52 × 71,548.10
  4. Step 4: Simplify right side
    75,603.56x = 8,094,129,738.43
  5. Step 5: Solve for x
    x = 8,094,129,738.43/75,603.56
  6. Step 6: Final answer
    x = 107,060.16

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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.