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Finding the Fourth Proportional to 18,685.99, 28,036.57 and 7,593.54

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Solution

The fourth proportional to 18,685.99, 28,036.57 and 7,593.54 is: 11,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.99 : 28,036.57 = 7,593.54 : x
  2. Step 2: Convert to fraction form
    18,685.99/28,036.57 = 7,593.54/x
  3. Step 3: Cross multiply
    18,685.99x = 28,036.57 × 7,593.54
  4. Step 4: Simplify right side
    18,685.99x = 212,896,815.76
  5. Step 5: Solve for x
    x = 212,896,815.76/18,685.99
  6. Step 6: Final answer
    x = 11,393.40

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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.