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Finding the Fourth Proportional to 46,139.80, 69,209.70 and 22,811.80

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Solution

The fourth proportional to 46,139.80, 69,209.70 and 22,811.80 is: 34,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,139.80 : 69,209.70 = 22,811.80 : x
  2. Step 2: Convert to fraction form
    46,139.80/69,209.70 = 22,811.80/x
  3. Step 3: Cross multiply
    46,139.80x = 69,209.70 × 22,811.80
  4. Step 4: Simplify right side
    46,139.80x = 1,578,797,834.46
  5. Step 5: Solve for x
    x = 1,578,797,834.46/46,139.80
  6. Step 6: Final answer
    x = 34,217.70

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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.