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Finding the Fourth Proportional to 61,157.79, 84,396.74 and 35,678.97

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Solution

The fourth proportional to 61,157.79, 84,396.74 and 35,678.97 is: 49,236.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,157.79 : 84,396.74 = 35,678.97 : x
  2. Step 2: Convert to fraction form
    61,157.79/84,396.74 = 35,678.97/x
  3. Step 3: Cross multiply
    61,157.79x = 84,396.74 × 35,678.97
  4. Step 4: Simplify right side
    61,157.79x = 3,011,188,576.16
  5. Step 5: Solve for x
    x = 3,011,188,576.16/61,157.79
  6. Step 6: Final answer
    x = 49,236.39

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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.