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Finding the Fourth Proportional to 19,906.48, 29,859.52 and 7,426.08

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Solution

The fourth proportional to 19,906.48, 29,859.52 and 7,426.08 is: 11,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,906.48 : 29,859.52 = 7,426.08 : x
  2. Step 2: Convert to fraction form
    19,906.48/29,859.52 = 7,426.08/x
  3. Step 3: Cross multiply
    19,906.48x = 29,859.52 × 7,426.08
  4. Step 4: Simplify right side
    19,906.48x = 221,739,184.28
  5. Step 5: Solve for x
    x = 221,739,184.28/19,906.48
  6. Step 6: Final answer
    x = 11,139.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.