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Finding the Fourth Proportional to 66,858.40, 92,264.02 and 36,643.11

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Solution

The fourth proportional to 66,858.40, 92,264.02 and 36,643.11 is: 50,567.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,858.40 : 92,264.02 = 36,643.11 : x
  2. Step 2: Convert to fraction form
    66,858.40/92,264.02 = 36,643.11/x
  3. Step 3: Cross multiply
    66,858.40x = 92,264.02 × 36,643.11
  4. Step 4: Simplify right side
    66,858.40x = 3,380,840,633.90
  5. Step 5: Solve for x
    x = 3,380,840,633.90/66,858.40
  6. Step 6: Final answer
    x = 50,567.18

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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.