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Finding the Fourth Proportional to 8,660.19, 12,973.20 and 4,502.91

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Solution

The fourth proportional to 8,660.19, 12,973.20 and 4,502.91 is: 6,745.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.19 : 12,973.20 = 4,502.91 : x
  2. Step 2: Convert to fraction form
    8,660.19/12,973.20 = 4,502.91/x
  3. Step 3: Cross multiply
    8,660.19x = 12,973.20 × 4,502.91
  4. Step 4: Simplify right side
    8,660.19x = 58,417,152.01
  5. Step 5: Solve for x
    x = 58,417,152.01/8,660.19
  6. Step 6: Final answer
    x = 6,745.48

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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.