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Finding the Fourth Proportional to 14,482.80, 21,718.80 and 5,715.90

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Solution

The fourth proportional to 14,482.80, 21,718.80 and 5,715.90 is: 8,571.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,482.80 : 21,718.80 = 5,715.90 : x
  2. Step 2: Convert to fraction form
    14,482.80/21,718.80 = 5,715.90/x
  3. Step 3: Cross multiply
    14,482.80x = 21,718.80 × 5,715.90
  4. Step 4: Simplify right side
    14,482.80x = 124,142,488.92
  5. Step 5: Solve for x
    x = 124,142,488.92/14,482.80
  6. Step 6: Final answer
    x = 8,571.72

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