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Finding the Fourth Proportional to 28,401.92, 42,590.44 and 8,675.92

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Solution

The fourth proportional to 28,401.92, 42,590.44 and 8,675.92 is: 13,010.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.92 : 42,590.44 = 8,675.92 : x
  2. Step 2: Convert to fraction form
    28,401.92/42,590.44 = 8,675.92/x
  3. Step 3: Cross multiply
    28,401.92x = 42,590.44 × 8,675.92
  4. Step 4: Simplify right side
    28,401.92x = 369,511,250.20
  5. Step 5: Solve for x
    x = 369,511,250.20/28,401.92
  6. Step 6: Final answer
    x = 13,010.08

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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.