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Finding the Fourth Proportional to 112,776.33, 169,111.53 and 65,404.90

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Solution

The fourth proportional to 112,776.33, 169,111.53 and 65,404.90 is: 98,076.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,776.33 : 169,111.53 = 65,404.90 : x
  2. Step 2: Convert to fraction form
    112,776.33/169,111.53 = 65,404.90/x
  3. Step 3: Cross multiply
    112,776.33x = 169,111.53 × 65,404.90
  4. Step 4: Simplify right side
    112,776.33x = 11,060,722,919.89
  5. Step 5: Solve for x
    x = 11,060,722,919.89/112,776.33
  6. Step 6: Final answer
    x = 98,076.63

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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.