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Finding the Fourth Proportional to 65,894.40, 98,857.23 and 21,521.07

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Solution

The fourth proportional to 65,894.40, 98,857.23 and 21,521.07 is: 32,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,894.40 : 98,857.23 = 21,521.07 : x
  2. Step 2: Convert to fraction form
    65,894.40/98,857.23 = 21,521.07/x
  3. Step 3: Cross multiply
    65,894.40x = 98,857.23 × 21,521.07
  4. Step 4: Simplify right side
    65,894.40x = 2,127,513,366.84
  5. Step 5: Solve for x
    x = 2,127,513,366.84/65,894.40
  6. Step 6: Final answer
    x = 32,286.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.