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Finding the Fourth Proportional to 28,594.10, 42,895.29 and 8,874.25

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Solution

The fourth proportional to 28,594.10, 42,895.29 and 8,874.25 is: 13,312.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,594.10 : 42,895.29 = 8,874.25 : x
  2. Step 2: Convert to fraction form
    28,594.10/42,895.29 = 8,874.25/x
  3. Step 3: Cross multiply
    28,594.10x = 42,895.29 × 8,874.25
  4. Step 4: Simplify right side
    28,594.10x = 380,663,527.28
  5. Step 5: Solve for x
    x = 380,663,527.28/28,594.10
  6. Step 6: Final answer
    x = 13,312.66

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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.