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Finding the Fourth Proportional to 26,614.15, 39,929.65 and 7,894.26

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Solution

The fourth proportional to 26,614.15, 39,929.65 and 7,894.26 is: 11,843.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,614.15 : 39,929.65 = 7,894.26 : x
  2. Step 2: Convert to fraction form
    26,614.15/39,929.65 = 7,894.26/x
  3. Step 3: Cross multiply
    26,614.15x = 39,929.65 × 7,894.26
  4. Step 4: Simplify right side
    26,614.15x = 315,215,038.81
  5. Step 5: Solve for x
    x = 315,215,038.81/26,614.15
  6. Step 6: Final answer
    x = 11,843.89

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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.