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Finding the Fourth Proportional to 12,356.51, 18,529.09 and 5,333.15

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Solution

The fourth proportional to 12,356.51, 18,529.09 and 5,333.15 is: 7,997.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.51 : 18,529.09 = 5,333.15 : x
  2. Step 2: Convert to fraction form
    12,356.51/18,529.09 = 5,333.15/x
  3. Step 3: Cross multiply
    12,356.51x = 18,529.09 × 5,333.15
  4. Step 4: Simplify right side
    12,356.51x = 98,818,449.32
  5. Step 5: Solve for x
    x = 98,818,449.32/12,356.51
  6. Step 6: Final answer
    x = 7,997.28

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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.