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Finding the Fourth Proportional to 8,786.32, 12,124.95 and 4,807.30

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Solution

The fourth proportional to 8,786.32, 12,124.95 and 4,807.30 is: 6,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.32 : 12,124.95 = 4,807.30 : x
  2. Step 2: Convert to fraction form
    8,786.32/12,124.95 = 4,807.30/x
  3. Step 3: Cross multiply
    8,786.32x = 12,124.95 × 4,807.30
  4. Step 4: Simplify right side
    8,786.32x = 58,288,272.14
  5. Step 5: Solve for x
    x = 58,288,272.14/8,786.32
  6. Step 6: Final answer
    x = 6,633.98

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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.