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Finding the Fourth Proportional to 40,616.51, 60,920.90 and 12,529.01

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Solution

The fourth proportional to 40,616.51, 60,920.90 and 12,529.01 is: 18,792.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,616.51 : 60,920.90 = 12,529.01 : x
  2. Step 2: Convert to fraction form
    40,616.51/60,920.90 = 12,529.01/x
  3. Step 3: Cross multiply
    40,616.51x = 60,920.90 × 12,529.01
  4. Step 4: Simplify right side
    40,616.51x = 763,278,198.06
  5. Step 5: Solve for x
    x = 763,278,198.06/40,616.51
  6. Step 6: Final answer
    x = 18,792.32

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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.