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Finding the Fourth Proportional to 65,868.75, 90,898.88 and 36,060.75

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Solution

The fourth proportional to 65,868.75, 90,898.88 and 36,060.75 is: 49,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,868.75 : 90,898.88 = 36,060.75 : x
  2. Step 2: Convert to fraction form
    65,868.75/90,898.88 = 36,060.75/x
  3. Step 3: Cross multiply
    65,868.75x = 90,898.88 × 36,060.75
  4. Step 4: Simplify right side
    65,868.75x = 3,277,881,606.66
  5. Step 5: Solve for x
    x = 3,277,881,606.66/65,868.75
  6. Step 6: Final answer
    x = 49,763.84

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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.