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Finding the Fourth Proportional to 11,048.84, 15,241.47 and 7,685.81

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Solution

The fourth proportional to 11,048.84, 15,241.47 and 7,685.81 is: 10,602.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,048.84 : 15,241.47 = 7,685.81 : x
  2. Step 2: Convert to fraction form
    11,048.84/15,241.47 = 7,685.81/x
  3. Step 3: Cross multiply
    11,048.84x = 15,241.47 × 7,685.81
  4. Step 4: Simplify right side
    11,048.84x = 117,142,994.67
  5. Step 5: Solve for x
    x = 117,142,994.67/11,048.84
  6. Step 6: Final answer
    x = 10,602.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.