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Finding the Fourth Proportional to 7,009.76, 10,514.58 and 2,078.99

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Solution

The fourth proportional to 7,009.76, 10,514.58 and 2,078.99 is: 3,118.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,009.76 : 10,514.58 = 2,078.99 : x
  2. Step 2: Convert to fraction form
    7,009.76/10,514.58 = 2,078.99/x
  3. Step 3: Cross multiply
    7,009.76x = 10,514.58 × 2,078.99
  4. Step 4: Simplify right side
    7,009.76x = 21,859,654.10
  5. Step 5: Solve for x
    x = 21,859,654.10/7,009.76
  6. Step 6: Final answer
    x = 3,118.46

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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.