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Finding the Fourth Proportional to 15,607.82, 23,409.98 and 3,921.06

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Solution

The fourth proportional to 15,607.82, 23,409.98 and 3,921.06 is: 5,881.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.82 : 23,409.98 = 3,921.06 : x
  2. Step 2: Convert to fraction form
    15,607.82/23,409.98 = 3,921.06/x
  3. Step 3: Cross multiply
    15,607.82x = 23,409.98 × 3,921.06
  4. Step 4: Simplify right side
    15,607.82x = 91,791,936.18
  5. Step 5: Solve for x
    x = 91,791,936.18/15,607.82
  6. Step 6: Final answer
    x = 5,881.15

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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.