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Finding the Fourth Proportional to 18,703.24, 28,053.76 and 7,015.48

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Solution

The fourth proportional to 18,703.24, 28,053.76 and 7,015.48 is: 10,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.24 : 28,053.76 = 7,015.48 : x
  2. Step 2: Convert to fraction form
    18,703.24/28,053.76 = 7,015.48/x
  3. Step 3: Cross multiply
    18,703.24x = 28,053.76 × 7,015.48
  4. Step 4: Simplify right side
    18,703.24x = 196,810,592.20
  5. Step 5: Solve for x
    x = 196,810,592.20/18,703.24
  6. Step 6: Final answer
    x = 10,522.81

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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.