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Finding the Fourth Proportional to 19,089.20, 28,633.80 and 17,706.80

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Solution

The fourth proportional to 19,089.20, 28,633.80 and 17,706.80 is: 26,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,089.20 : 28,633.80 = 17,706.80 : x
  2. Step 2: Convert to fraction form
    19,089.20/28,633.80 = 17,706.80/x
  3. Step 3: Cross multiply
    19,089.20x = 28,633.80 × 17,706.80
  4. Step 4: Simplify right side
    19,089.20x = 507,012,969.84
  5. Step 5: Solve for x
    x = 507,012,969.84/19,089.20
  6. Step 6: Final answer
    x = 26,560.20

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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.