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Finding the Fourth Proportional to 8,634.93, 11,915.08 and 4,857.63

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Solution

The fourth proportional to 8,634.93, 11,915.08 and 4,857.63 is: 6,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.93 : 11,915.08 = 4,857.63 : x
  2. Step 2: Convert to fraction form
    8,634.93/11,915.08 = 4,857.63/x
  3. Step 3: Cross multiply
    8,634.93x = 11,915.08 × 4,857.63
  4. Step 4: Simplify right side
    8,634.93x = 57,879,050.06
  5. Step 5: Solve for x
    x = 57,879,050.06/8,634.93
  6. Step 6: Final answer
    x = 6,702.90

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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.