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Finding the Fourth Proportional to 31,602.96, 47,394.36 and 12,882.96

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Solution

The fourth proportional to 31,602.96, 47,394.36 and 12,882.96 is: 19,320.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,602.96 : 47,394.36 = 12,882.96 : x
  2. Step 2: Convert to fraction form
    31,602.96/47,394.36 = 12,882.96/x
  3. Step 3: Cross multiply
    31,602.96x = 47,394.36 × 12,882.96
  4. Step 4: Simplify right side
    31,602.96x = 610,579,644.11
  5. Step 5: Solve for x
    x = 610,579,644.11/31,602.96
  6. Step 6: Final answer
    x = 19,320.33

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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.