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Finding the Fourth Proportional to 14,363.55, 19,821.65 and 8,394.03

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Solution

The fourth proportional to 14,363.55, 19,821.65 and 8,394.03 is: 11,583.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,363.55 : 19,821.65 = 8,394.03 : x
  2. Step 2: Convert to fraction form
    14,363.55/19,821.65 = 8,394.03/x
  3. Step 3: Cross multiply
    14,363.55x = 19,821.65 × 8,394.03
  4. Step 4: Simplify right side
    14,363.55x = 166,383,482.78
  5. Step 5: Solve for x
    x = 166,383,482.78/14,363.55
  6. Step 6: Final answer
    x = 11,583.73

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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.