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Finding the Fourth Proportional to 19,482.80, 26,885.45 and 10,986.67

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Solution

The fourth proportional to 19,482.80, 26,885.45 and 10,986.67 is: 15,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,482.80 : 26,885.45 = 10,986.67 : x
  2. Step 2: Convert to fraction form
    19,482.80/26,885.45 = 10,986.67/x
  3. Step 3: Cross multiply
    19,482.80x = 26,885.45 × 10,986.67
  4. Step 4: Simplify right side
    19,482.80x = 295,381,628.02
  5. Step 5: Solve for x
    x = 295,381,628.02/19,482.80
  6. Step 6: Final answer
    x = 15,161.15

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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.