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Finding the Fourth Proportional to 18,703.92, 28,048.59 and 7,010.76

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Solution

The fourth proportional to 18,703.92, 28,048.59 and 7,010.76 is: 10,513.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.92 : 28,048.59 = 7,010.76 : x
  2. Step 2: Convert to fraction form
    18,703.92/28,048.59 = 7,010.76/x
  3. Step 3: Cross multiply
    18,703.92x = 28,048.59 × 7,010.76
  4. Step 4: Simplify right side
    18,703.92x = 196,641,932.83
  5. Step 5: Solve for x
    x = 196,641,932.83/18,703.92
  6. Step 6: Final answer
    x = 10,513.41

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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.