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Finding the Fourth Proportional to 14,917.24, 20,585.84 and 8,203.28

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Solution

The fourth proportional to 14,917.24, 20,585.84 and 8,203.28 is: 11,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,917.24 : 20,585.84 = 8,203.28 : x
  2. Step 2: Convert to fraction form
    14,917.24/20,585.84 = 8,203.28/x
  3. Step 3: Cross multiply
    14,917.24x = 20,585.84 × 8,203.28
  4. Step 4: Simplify right side
    14,917.24x = 168,871,420.00
  5. Step 5: Solve for x
    x = 168,871,420.00/14,917.24
  6. Step 6: Final answer
    x = 11,320.56

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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.