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Finding the Fourth Proportional to 28,472.61, 42,734.99 and 14,442.33

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Solution

The fourth proportional to 28,472.61, 42,734.99 and 14,442.33 is: 21,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.61 : 42,734.99 = 14,442.33 : x
  2. Step 2: Convert to fraction form
    28,472.61/42,734.99 = 14,442.33/x
  3. Step 3: Cross multiply
    28,472.61x = 42,734.99 × 14,442.33
  4. Step 4: Simplify right side
    28,472.61x = 617,193,024.49
  5. Step 5: Solve for x
    x = 617,193,024.49/28,472.61
  6. Step 6: Final answer
    x = 21,676.73

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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.