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Finding the Fourth Proportional to 66,858.74, 92,263.08 and 36,643.40

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Solution

The fourth proportional to 66,858.74, 92,263.08 and 36,643.40 is: 50,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,858.74 : 92,263.08 = 36,643.40 : x
  2. Step 2: Convert to fraction form
    66,858.74/92,263.08 = 36,643.40/x
  3. Step 3: Cross multiply
    66,858.74x = 92,263.08 × 36,643.40
  4. Step 4: Simplify right side
    66,858.74x = 3,380,832,945.67
  5. Step 5: Solve for x
    x = 3,380,832,945.67/66,858.74
  6. Step 6: Final answer
    x = 50,566.81

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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.