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Finding the Fourth Proportional to 62,790.80, 94,339.80 and 47,238.80

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Solution

The fourth proportional to 62,790.80, 94,339.80 and 47,238.80 is: 70,973.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,790.80 : 94,339.80 = 47,238.80 : x
  2. Step 2: Convert to fraction form
    62,790.80/94,339.80 = 47,238.80/x
  3. Step 3: Cross multiply
    62,790.80x = 94,339.80 × 47,238.80
  4. Step 4: Simplify right side
    62,790.80x = 4,456,498,944.24
  5. Step 5: Solve for x
    x = 4,456,498,944.24/62,790.80
  6. Step 6: Final answer
    x = 70,973.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.