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Finding the Fourth Proportional to 48,462.74, 66,868.76 and 28,315.73

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Solution

The fourth proportional to 48,462.74, 66,868.76 and 28,315.73 is: 39,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,462.74 : 66,868.76 = 28,315.73 : x
  2. Step 2: Convert to fraction form
    48,462.74/66,868.76 = 28,315.73/x
  3. Step 3: Cross multiply
    48,462.74x = 66,868.76 × 28,315.73
  4. Step 4: Simplify right side
    48,462.74x = 1,893,437,277.67
  5. Step 5: Solve for x
    x = 1,893,437,277.67/48,462.74
  6. Step 6: Final answer
    x = 39,069.96

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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.