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Finding the Fourth Proportional to 8,785.44, 12,124.92 and 4,905.24

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Solution

The fourth proportional to 8,785.44, 12,124.92 and 4,905.24 is: 6,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.44 : 12,124.92 = 4,905.24 : x
  2. Step 2: Convert to fraction form
    8,785.44/12,124.92 = 4,905.24/x
  3. Step 3: Cross multiply
    8,785.44x = 12,124.92 × 4,905.24
  4. Step 4: Simplify right side
    8,785.44x = 59,475,642.58
  5. Step 5: Solve for x
    x = 59,475,642.58/8,785.44
  6. Step 6: Final answer
    x = 6,769.80

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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.