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Finding the Fourth Proportional to 14,616.80, 21,925.18 and 4,086.80

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Solution

The fourth proportional to 14,616.80, 21,925.18 and 4,086.80 is: 6,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.80 : 21,925.18 = 4,086.80 : x
  2. Step 2: Convert to fraction form
    14,616.80/21,925.18 = 4,086.80/x
  3. Step 3: Cross multiply
    14,616.80x = 21,925.18 × 4,086.80
  4. Step 4: Simplify right side
    14,616.80x = 89,603,825.62
  5. Step 5: Solve for x
    x = 89,603,825.62/14,616.80
  6. Step 6: Final answer
    x = 6,130.19

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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.