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Finding the Fourth Proportional to 66,896.88, 92,315.76 and 36,680.64

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Solution

The fourth proportional to 66,896.88, 92,315.76 and 36,680.64 is: 50,618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,896.88 : 92,315.76 = 36,680.64 : x
  2. Step 2: Convert to fraction form
    66,896.88/92,315.76 = 36,680.64/x
  3. Step 3: Cross multiply
    66,896.88x = 92,315.76 × 36,680.64
  4. Step 4: Simplify right side
    66,896.88x = 3,386,201,158.89
  5. Step 5: Solve for x
    x = 3,386,201,158.89/66,896.88
  6. Step 6: Final answer
    x = 50,618.22

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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.