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Finding the Fourth Proportional to 15,993.80, 22,075.82 and 9,281.58

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Solution

The fourth proportional to 15,993.80, 22,075.82 and 9,281.58 is: 12,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,993.80 : 22,075.82 = 9,281.58 : x
  2. Step 2: Convert to fraction form
    15,993.80/22,075.82 = 9,281.58/x
  3. Step 3: Cross multiply
    15,993.80x = 22,075.82 × 9,281.58
  4. Step 4: Simplify right side
    15,993.80x = 204,898,512.60
  5. Step 5: Solve for x
    x = 204,898,512.60/15,993.80
  6. Step 6: Final answer
    x = 12,811.13

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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.