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Finding the Fourth Proportional to 61,718.55, 92,577.81 and 21,728.11

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Solution

The fourth proportional to 61,718.55, 92,577.81 and 21,728.11 is: 32,592.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,718.55 : 92,577.81 = 21,728.11 : x
  2. Step 2: Convert to fraction form
    61,718.55/92,577.81 = 21,728.11/x
  3. Step 3: Cross multiply
    61,718.55x = 92,577.81 × 21,728.11
  4. Step 4: Simplify right side
    61,718.55x = 2,011,540,839.24
  5. Step 5: Solve for x
    x = 2,011,540,839.24/61,718.55
  6. Step 6: Final answer
    x = 32,592.16

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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.