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Finding the Fourth Proportional to 61,718.95, 92,605.16 and 21,766.48

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Solution

The fourth proportional to 61,718.95, 92,605.16 and 21,766.48 is: 32,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,718.95 : 92,605.16 = 21,766.48 : x
  2. Step 2: Convert to fraction form
    61,718.95/92,605.16 = 21,766.48/x
  3. Step 3: Cross multiply
    61,718.95x = 92,605.16 × 21,766.48
  4. Step 4: Simplify right side
    61,718.95x = 2,015,688,363.04
  5. Step 5: Solve for x
    x = 2,015,688,363.04/61,718.95
  6. Step 6: Final answer
    x = 32,659.15

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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.