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Finding the Fourth Proportional to 66,368.97, 91,587.78 and 36,153.95

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Solution

The fourth proportional to 66,368.97, 91,587.78 and 36,153.95 is: 49,891.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,368.97 : 91,587.78 = 36,153.95 : x
  2. Step 2: Convert to fraction form
    66,368.97/91,587.78 = 36,153.95/x
  3. Step 3: Cross multiply
    66,368.97x = 91,587.78 × 36,153.95
  4. Step 4: Simplify right side
    66,368.97x = 3,311,259,560.79
  5. Step 5: Solve for x
    x = 3,311,259,560.79/66,368.97
  6. Step 6: Final answer
    x = 49,891.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.