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Finding the Fourth Proportional to 9,365.84, 12,935.76 and 6,216.56

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Solution

The fourth proportional to 9,365.84, 12,935.76 and 6,216.56 is: 8,586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365.84 : 12,935.76 = 6,216.56 : x
  2. Step 2: Convert to fraction form
    9,365.84/12,935.76 = 6,216.56/x
  3. Step 3: Cross multiply
    9,365.84x = 12,935.76 × 6,216.56
  4. Step 4: Simplify right side
    9,365.84x = 80,415,928.19
  5. Step 5: Solve for x
    x = 80,415,928.19/9,365.84
  6. Step 6: Final answer
    x = 8,586.09

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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.