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Finding the Fourth Proportional to 20,514, 30,609.98 and 19,260.12

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Solution

The fourth proportional to 20,514, 30,609.98 and 19,260.12 is: 28,739.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514 : 30,609.98 = 19,260.12 : x
  2. Step 2: Convert to fraction form
    20,514/30,609.98 = 19,260.12/x
  3. Step 3: Cross multiply
    20,514x = 30,609.98 × 19,260.12
  4. Step 4: Simplify right side
    20,514x = 589,551,888.00
  5. Step 5: Solve for x
    x = 589,551,888.00/20,514
  6. Step 6: Final answer
    x = 28,739.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.