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Finding the Fourth Proportional to 18,898.74, 28,346.94 and 7,050.22

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Solution

The fourth proportional to 18,898.74, 28,346.94 and 7,050.22 is: 10,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.74 : 28,346.94 = 7,050.22 : x
  2. Step 2: Convert to fraction form
    18,898.74/28,346.94 = 7,050.22/x
  3. Step 3: Cross multiply
    18,898.74x = 28,346.94 × 7,050.22
  4. Step 4: Simplify right side
    18,898.74x = 199,852,163.33
  5. Step 5: Solve for x
    x = 199,852,163.33/18,898.74
  6. Step 6: Final answer
    x = 10,574.89

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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.