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Finding the Fourth Proportional to 28,596.63, 42,900.62 and 8,874.35

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Solution

The fourth proportional to 28,596.63, 42,900.62 and 8,874.35 is: 13,313.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,596.63 : 42,900.62 = 8,874.35 : x
  2. Step 2: Convert to fraction form
    28,596.63/42,900.62 = 8,874.35/x
  3. Step 3: Cross multiply
    28,596.63x = 42,900.62 × 8,874.35
  4. Step 4: Simplify right side
    28,596.63x = 380,715,117.10
  5. Step 5: Solve for x
    x = 380,715,117.10/28,596.63
  6. Step 6: Final answer
    x = 13,313.29

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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.