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Finding the Fourth Proportional to 65,694.16, 90,623.52 and 41,486.35

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Solution

The fourth proportional to 65,694.16, 90,623.52 and 41,486.35 is: 57,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,694.16 : 90,623.52 = 41,486.35 : x
  2. Step 2: Convert to fraction form
    65,694.16/90,623.52 = 41,486.35/x
  3. Step 3: Cross multiply
    65,694.16x = 90,623.52 × 41,486.35
  4. Step 4: Simplify right side
    65,694.16x = 3,759,639,068.95
  5. Step 5: Solve for x
    x = 3,759,639,068.95/65,694.16
  6. Step 6: Final answer
    x = 57,229.43

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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.