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Finding the Fourth Proportional to 11,857.39, 16,362.54 and 6,551.87

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Solution

The fourth proportional to 11,857.39, 16,362.54 and 6,551.87 is: 9,041.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,857.39 : 16,362.54 = 6,551.87 : x
  2. Step 2: Convert to fraction form
    11,857.39/16,362.54 = 6,551.87/x
  3. Step 3: Cross multiply
    11,857.39x = 16,362.54 × 6,551.87
  4. Step 4: Simplify right side
    11,857.39x = 107,205,153.14
  5. Step 5: Solve for x
    x = 107,205,153.14/11,857.39
  6. Step 6: Final answer
    x = 9,041.21

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1.5x scale

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.