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Finding the Fourth Proportional to 14,773.92, 20,390.64 and 8,805.98

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Solution

The fourth proportional to 14,773.92, 20,390.64 and 8,805.98 is: 12,153.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,773.92 : 20,390.64 = 8,805.98 : x
  2. Step 2: Convert to fraction form
    14,773.92/20,390.64 = 8,805.98/x
  3. Step 3: Cross multiply
    14,773.92x = 20,390.64 × 8,805.98
  4. Step 4: Simplify right side
    14,773.92x = 179,559,466.07
  5. Step 5: Solve for x
    x = 179,559,466.07/14,773.92
  6. Step 6: Final answer
    x = 12,153.81

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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.