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Finding the Fourth Proportional to 26,929.49, 40,412.68 and 9,399.31

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Solution

The fourth proportional to 26,929.49, 40,412.68 and 9,399.31 is: 14,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,929.49 : 40,412.68 = 9,399.31 : x
  2. Step 2: Convert to fraction form
    26,929.49/40,412.68 = 9,399.31/x
  3. Step 3: Cross multiply
    26,929.49x = 40,412.68 × 9,399.31
  4. Step 4: Simplify right side
    26,929.49x = 379,851,182.72
  5. Step 5: Solve for x
    x = 379,851,182.72/26,929.49
  6. Step 6: Final answer
    x = 14,105.40

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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.