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Finding the Fourth Proportional to 135,887.61, 187,518.63 and 75,462.11

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Solution

The fourth proportional to 135,887.61, 187,518.63 and 75,462.11 is: 104,134.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,887.61 : 187,518.63 = 75,462.11 : x
  2. Step 2: Convert to fraction form
    135,887.61/187,518.63 = 75,462.11/x
  3. Step 3: Cross multiply
    135,887.61x = 187,518.63 × 75,462.11
  4. Step 4: Simplify right side
    135,887.61x = 14,150,550,546.52
  5. Step 5: Solve for x
    x = 14,150,550,546.52/135,887.61
  6. Step 6: Final answer
    x = 104,134.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.