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Finding the Fourth Proportional to 60,961.16, 91,422.76 and 21,509.03

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Solution

The fourth proportional to 60,961.16, 91,422.76 and 21,509.03 is: 32,256.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,961.16 : 91,422.76 = 21,509.03 : x
  2. Step 2: Convert to fraction form
    60,961.16/91,422.76 = 21,509.03/x
  3. Step 3: Cross multiply
    60,961.16x = 91,422.76 × 21,509.03
  4. Step 4: Simplify right side
    60,961.16x = 1,966,414,605.19
  5. Step 5: Solve for x
    x = 1,966,414,605.19/60,961.16
  6. Step 6: Final answer
    x = 32,256.84

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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.