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Finding the Fourth Proportional to 14,868.59, 20,518.93 and 8,153.81

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Solution

The fourth proportional to 14,868.59, 20,518.93 and 8,153.81 is: 11,252.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,868.59 : 20,518.93 = 8,153.81 : x
  2. Step 2: Convert to fraction form
    14,868.59/20,518.93 = 8,153.81/x
  3. Step 3: Cross multiply
    14,868.59x = 20,518.93 × 8,153.81
  4. Step 4: Simplify right side
    14,868.59x = 167,307,568.05
  5. Step 5: Solve for x
    x = 167,307,568.05/14,868.59
  6. Step 6: Final answer
    x = 11,252.42

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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.