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Finding the Fourth Proportional to 11,895.80, 16,408.76 and 7,652.39

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Solution

The fourth proportional to 11,895.80, 16,408.76 and 7,652.39 is: 10,555.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.80 : 16,408.76 = 7,652.39 : x
  2. Step 2: Convert to fraction form
    11,895.80/16,408.76 = 7,652.39/x
  3. Step 3: Cross multiply
    11,895.80x = 16,408.76 × 7,652.39
  4. Step 4: Simplify right side
    11,895.80x = 125,566,110.63
  5. Step 5: Solve for x
    x = 125,566,110.63/11,895.80
  6. Step 6: Final answer
    x = 10,555.50

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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.