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Finding the Fourth Proportional to 14,411.80, 19,888.50 and 8,124.58

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Solution

The fourth proportional to 14,411.80, 19,888.50 and 8,124.58 is: 11,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,411.80 : 19,888.50 = 8,124.58 : x
  2. Step 2: Convert to fraction form
    14,411.80/19,888.50 = 8,124.58/x
  3. Step 3: Cross multiply
    14,411.80x = 19,888.50 × 8,124.58
  4. Step 4: Simplify right side
    14,411.80x = 161,585,709.33
  5. Step 5: Solve for x
    x = 161,585,709.33/14,411.80
  6. Step 6: Final answer
    x = 11,212.04

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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.