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Finding the Fourth Proportional to 65,887.52, 90,924.84 and 35,672.87

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Solution

The fourth proportional to 65,887.52, 90,924.84 and 35,672.87 is: 49,228.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,887.52 : 90,924.84 = 35,672.87 : x
  2. Step 2: Convert to fraction form
    65,887.52/90,924.84 = 35,672.87/x
  3. Step 3: Cross multiply
    65,887.52x = 90,924.84 × 35,672.87
  4. Step 4: Simplify right side
    65,887.52x = 3,243,549,997.09
  5. Step 5: Solve for x
    x = 3,243,549,997.09/65,887.52
  6. Step 6: Final answer
    x = 49,228.59

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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.