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Finding the Fourth Proportional to 8,479.88, 11,701.77 and 4,702.58

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Solution

The fourth proportional to 8,479.88, 11,701.77 and 4,702.58 is: 6,489.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.88 : 11,701.77 = 4,702.58 : x
  2. Step 2: Convert to fraction form
    8,479.88/11,701.77 = 4,702.58/x
  3. Step 3: Cross multiply
    8,479.88x = 11,701.77 × 4,702.58
  4. Step 4: Simplify right side
    8,479.88x = 55,028,509.57
  5. Step 5: Solve for x
    x = 55,028,509.57/8,479.88
  6. Step 6: Final answer
    x = 6,489.30

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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.