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Finding the Fourth Proportional to 66,083.16, 91,194.80 and 35,868.48

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Solution

The fourth proportional to 66,083.16, 91,194.80 and 35,868.48 is: 49,498.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,083.16 : 91,194.80 = 35,868.48 : x
  2. Step 2: Convert to fraction form
    66,083.16/91,194.80 = 35,868.48/x
  3. Step 3: Cross multiply
    66,083.16x = 91,194.80 × 35,868.48
  4. Step 4: Simplify right side
    66,083.16x = 3,271,018,859.90
  5. Step 5: Solve for x
    x = 3,271,018,859.90/66,083.16
  6. Step 6: Final answer
    x = 49,498.52

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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.