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Finding the Fourth Proportional to 8,785.52, 12,118.32 and 5,246

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Solution

The fourth proportional to 8,785.52, 12,118.32 and 5,246 is: 7,236.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.52 : 12,118.32 = 5,246 : x
  2. Step 2: Convert to fraction form
    8,785.52/12,118.32 = 5,246/x
  3. Step 3: Cross multiply
    8,785.52x = 12,118.32 × 5,246
  4. Step 4: Simplify right side
    8,785.52x = 63,572,706.72
  5. Step 5: Solve for x
    x = 63,572,706.72/8,785.52
  6. Step 6: Final answer
    x = 7,236.08

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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.