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Finding the Fourth Proportional to 9,360.81, 13,972.65 and 8,253.66

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Solution

The fourth proportional to 9,360.81, 13,972.65 and 8,253.66 is: 12,320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.81 : 13,972.65 = 8,253.66 : x
  2. Step 2: Convert to fraction form
    9,360.81/13,972.65 = 8,253.66/x
  3. Step 3: Cross multiply
    9,360.81x = 13,972.65 × 8,253.66
  4. Step 4: Simplify right side
    9,360.81x = 115,325,502.40
  5. Step 5: Solve for x
    x = 115,325,502.40/9,360.81
  6. Step 6: Final answer
    x = 12,320.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.