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Finding the Fourth Proportional to 8,479.53, 11,701.89 and 4,702.85

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Solution

The fourth proportional to 8,479.53, 11,701.89 and 4,702.85 is: 6,490.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.53 : 11,701.89 = 4,702.85 : x
  2. Step 2: Convert to fraction form
    8,479.53/11,701.89 = 4,702.85/x
  3. Step 3: Cross multiply
    8,479.53x = 11,701.89 × 4,702.85
  4. Step 4: Simplify right side
    8,479.53x = 55,032,233.39
  5. Step 5: Solve for x
    x = 55,032,233.39/8,479.53
  6. Step 6: Final answer
    x = 6,490.01

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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.