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Finding the Fourth Proportional to 25,897.68, 38,846.20 and 7,429.68

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Solution

The fourth proportional to 25,897.68, 38,846.20 and 7,429.68 is: 11,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,897.68 : 38,846.20 = 7,429.68 : x
  2. Step 2: Convert to fraction form
    25,897.68/38,846.20 = 7,429.68/x
  3. Step 3: Cross multiply
    25,897.68x = 38,846.20 × 7,429.68
  4. Step 4: Simplify right side
    25,897.68x = 288,614,835.22
  5. Step 5: Solve for x
    x = 288,614,835.22/25,897.68
  6. Step 6: Final answer
    x = 11,144.43

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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.