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Finding the Fourth Proportional to 8,675.84, 11,973 and 4,899.80

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Solution

The fourth proportional to 8,675.84, 11,973 and 4,899.80 is: 6,761.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675.84 : 11,973 = 4,899.80 : x
  2. Step 2: Convert to fraction form
    8,675.84/11,973 = 4,899.80/x
  3. Step 3: Cross multiply
    8,675.84x = 11,973 × 4,899.80
  4. Step 4: Simplify right side
    8,675.84x = 58,665,305.40
  5. Step 5: Solve for x
    x = 58,665,305.40/8,675.84
  6. Step 6: Final answer
    x = 6,761.92

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Half scale
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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.