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Finding the Fourth Proportional to 8,590.95, 12,888.44 and 2,667.54

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Solution

The fourth proportional to 8,590.95, 12,888.44 and 2,667.54 is: 4,001.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.95 : 12,888.44 = 2,667.54 : x
  2. Step 2: Convert to fraction form
    8,590.95/12,888.44 = 2,667.54/x
  3. Step 3: Cross multiply
    8,590.95x = 12,888.44 × 2,667.54
  4. Step 4: Simplify right side
    8,590.95x = 34,380,415.90
  5. Step 5: Solve for x
    x = 34,380,415.90/8,590.95
  6. Step 6: Final answer
    x = 4,001.93

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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.