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Finding the Fourth Proportional to 18,933.12, 28,410.05 and 7,095.06

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Solution

The fourth proportional to 18,933.12, 28,410.05 and 7,095.06 is: 10,646.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.12 : 28,410.05 = 7,095.06 : x
  2. Step 2: Convert to fraction form
    18,933.12/28,410.05 = 7,095.06/x
  3. Step 3: Cross multiply
    18,933.12x = 28,410.05 × 7,095.06
  4. Step 4: Simplify right side
    18,933.12x = 201,571,027.09
  5. Step 5: Solve for x
    x = 201,571,027.09/18,933.12
  6. Step 6: Final answer
    x = 10,646.48

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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.