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Finding the Fourth Proportional to 28,595.63, 42,899.12 and 8,873.35

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Solution

The fourth proportional to 28,595.63, 42,899.12 and 8,873.35 is: 13,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,595.63 : 42,899.12 = 8,873.35 : x
  2. Step 2: Convert to fraction form
    28,595.63/42,899.12 = 8,873.35/x
  3. Step 3: Cross multiply
    28,595.63x = 42,899.12 × 8,873.35
  4. Step 4: Simplify right side
    28,595.63x = 380,658,788.11
  5. Step 5: Solve for x
    x = 380,658,788.11/28,595.63
  6. Step 6: Final answer
    x = 13,311.78

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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.