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Finding the Fourth Proportional to 14,935.08, 20,610.72 and 8,221.08

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Solution

The fourth proportional to 14,935.08, 20,610.72 and 8,221.08 is: 11,345.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,935.08 : 20,610.72 = 8,221.08 : x
  2. Step 2: Convert to fraction form
    14,935.08/20,610.72 = 8,221.08/x
  3. Step 3: Cross multiply
    14,935.08x = 20,610.72 × 8,221.08
  4. Step 4: Simplify right side
    14,935.08x = 169,442,377.98
  5. Step 5: Solve for x
    x = 169,442,377.98/14,935.08
  6. Step 6: Final answer
    x = 11,345.26

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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.