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Finding the Fourth Proportional to 107,257.31, 148,036.62 and 61,942.67

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Solution

The fourth proportional to 107,257.31, 148,036.62 and 61,942.67 is: 85,493.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,257.31 : 148,036.62 = 61,942.67 : x
  2. Step 2: Convert to fraction form
    107,257.31/148,036.62 = 61,942.67/x
  3. Step 3: Cross multiply
    107,257.31x = 148,036.62 × 61,942.67
  4. Step 4: Simplify right side
    107,257.31x = 9,169,782,760.39
  5. Step 5: Solve for x
    x = 9,169,782,760.39/107,257.31
  6. Step 6: Final answer
    x = 85,493.32

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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.