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Finding the Fourth Proportional to 99,240.48, 136,894.32 and 65,255.04

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Solution

The fourth proportional to 99,240.48, 136,894.32 and 65,255.04 is: 90,014.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,240.48 : 136,894.32 = 65,255.04 : x
  2. Step 2: Convert to fraction form
    99,240.48/136,894.32 = 65,255.04/x
  3. Step 3: Cross multiply
    99,240.48x = 136,894.32 × 65,255.04
  4. Step 4: Simplify right side
    99,240.48x = 8,933,044,327.37
  5. Step 5: Solve for x
    x = 8,933,044,327.37/99,240.48
  6. Step 6: Final answer
    x = 90,014.12

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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.