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Finding the Fourth Proportional to 8,448.76, 12,678.58 and 4,555.88

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Solution

The fourth proportional to 8,448.76, 12,678.58 and 4,555.88 is: 6,836.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,448.76 : 12,678.58 = 4,555.88 : x
  2. Step 2: Convert to fraction form
    8,448.76/12,678.58 = 4,555.88/x
  3. Step 3: Cross multiply
    8,448.76x = 12,678.58 × 4,555.88
  4. Step 4: Simplify right side
    8,448.76x = 57,762,089.05
  5. Step 5: Solve for x
    x = 57,762,089.05/8,448.76
  6. Step 6: Final answer
    x = 6,836.75

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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.