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Finding the Fourth Proportional to 14,647.61, 20,213.58 and 7,933.08

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Solution

The fourth proportional to 14,647.61, 20,213.58 and 7,933.08 is: 10,947.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,647.61 : 20,213.58 = 7,933.08 : x
  2. Step 2: Convert to fraction form
    14,647.61/20,213.58 = 7,933.08/x
  3. Step 3: Cross multiply
    14,647.61x = 20,213.58 × 7,933.08
  4. Step 4: Simplify right side
    14,647.61x = 160,355,947.23
  5. Step 5: Solve for x
    x = 160,355,947.23/14,647.61
  6. Step 6: Final answer
    x = 10,947.58

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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.