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Finding the Fourth Proportional to 10,191.65, 14,058.51 and 6,408.83

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Solution

The fourth proportional to 10,191.65, 14,058.51 and 6,408.83 is: 8,840.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,191.65 : 14,058.51 = 6,408.83 : x
  2. Step 2: Convert to fraction form
    10,191.65/14,058.51 = 6,408.83/x
  3. Step 3: Cross multiply
    10,191.65x = 14,058.51 × 6,408.83
  4. Step 4: Simplify right side
    10,191.65x = 90,098,600.64
  5. Step 5: Solve for x
    x = 90,098,600.64/10,191.65
  6. Step 6: Final answer
    x = 8,840.43

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Half scale
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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.