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Finding the Fourth Proportional to 28,552.58, 42,821.03 and 15,886.73

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Solution

The fourth proportional to 28,552.58, 42,821.03 and 15,886.73 is: 23,825.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,552.58 : 42,821.03 = 15,886.73 : x
  2. Step 2: Convert to fraction form
    28,552.58/42,821.03 = 15,886.73/x
  3. Step 3: Cross multiply
    28,552.58x = 42,821.03 × 15,886.73
  4. Step 4: Simplify right side
    28,552.58x = 680,286,244.02
  5. Step 5: Solve for x
    x = 680,286,244.02/28,552.58
  6. Step 6: Final answer
    x = 23,825.74

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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.