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Finding the Fourth Proportional to 19,056.80, 28,579.80 and 12,026.28

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Solution

The fourth proportional to 19,056.80, 28,579.80 and 12,026.28 is: 18,036.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,056.80 : 28,579.80 = 12,026.28 : x
  2. Step 2: Convert to fraction form
    19,056.80/28,579.80 = 12,026.28/x
  3. Step 3: Cross multiply
    19,056.80x = 28,579.80 × 12,026.28
  4. Step 4: Simplify right side
    19,056.80x = 343,708,632.05
  5. Step 5: Solve for x
    x = 343,708,632.05/19,056.80
  6. Step 6: Final answer
    x = 18,036.01

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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.