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Finding the Fourth Proportional to 8,625.47, 11,899.78 and 4,847.77

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Solution

The fourth proportional to 8,625.47, 11,899.78 and 4,847.77 is: 6,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.47 : 11,899.78 = 4,847.77 : x
  2. Step 2: Convert to fraction form
    8,625.47/11,899.78 = 4,847.77/x
  3. Step 3: Cross multiply
    8,625.47x = 11,899.78 × 4,847.77
  4. Step 4: Simplify right side
    8,625.47x = 57,687,432.71
  5. Step 5: Solve for x
    x = 57,687,432.71/8,625.47
  6. Step 6: Final answer
    x = 6,688.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.