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Finding the Fourth Proportional to 61,690.28, 85,133.16 and 33,396.56

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Solution

The fourth proportional to 61,690.28, 85,133.16 and 33,396.56 is: 46,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.28 : 85,133.16 = 33,396.56 : x
  2. Step 2: Convert to fraction form
    61,690.28/85,133.16 = 33,396.56/x
  3. Step 3: Cross multiply
    61,690.28x = 85,133.16 × 33,396.56
  4. Step 4: Simplify right side
    61,690.28x = 2,843,154,685.93
  5. Step 5: Solve for x
    x = 2,843,154,685.93/61,690.28
  6. Step 6: Final answer
    x = 46,087.56

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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.