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Finding the Fourth Proportional to 24,762.72, 34,134.84 and 20,971.92

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Solution

The fourth proportional to 24,762.72, 34,134.84 and 20,971.92 is: 28,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,762.72 : 34,134.84 = 20,971.92 : x
  2. Step 2: Convert to fraction form
    24,762.72/34,134.84 = 20,971.92/x
  3. Step 3: Cross multiply
    24,762.72x = 34,134.84 × 20,971.92
  4. Step 4: Simplify right side
    24,762.72x = 715,873,133.69
  5. Step 5: Solve for x
    x = 715,873,133.69/24,762.72
  6. Step 6: Final answer
    x = 28,909.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.