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Finding the Fourth Proportional to 65,595.46, 98,392.56 and 21,221.24

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Solution

The fourth proportional to 65,595.46, 98,392.56 and 21,221.24 is: 31,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,595.46 : 98,392.56 = 21,221.24 : x
  2. Step 2: Convert to fraction form
    65,595.46/98,392.56 = 21,221.24/x
  3. Step 3: Cross multiply
    65,595.46x = 98,392.56 × 21,221.24
  4. Step 4: Simplify right side
    65,595.46x = 2,088,012,129.97
  5. Step 5: Solve for x
    x = 2,088,012,129.97/65,595.46
  6. Step 6: Final answer
    x = 31,831.66

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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.