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Finding the Fourth Proportional to 10,662.84, 15,994.11 and 4,815.36

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Solution

The fourth proportional to 10,662.84, 15,994.11 and 4,815.36 is: 7,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662.84 : 15,994.11 = 4,815.36 : x
  2. Step 2: Convert to fraction form
    10,662.84/15,994.11 = 4,815.36/x
  3. Step 3: Cross multiply
    10,662.84x = 15,994.11 × 4,815.36
  4. Step 4: Simplify right side
    10,662.84x = 77,017,397.53
  5. Step 5: Solve for x
    x = 77,017,397.53/10,662.84
  6. Step 6: Final answer
    x = 7,222.97

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1.5x scale

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.