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Finding the Fourth Proportional to 47,876.70, 66,070.30 and 26,656.42

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Solution

The fourth proportional to 47,876.70, 66,070.30 and 26,656.42 is: 36,786.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,876.70 : 66,070.30 = 26,656.42 : x
  2. Step 2: Convert to fraction form
    47,876.70/66,070.30 = 26,656.42/x
  3. Step 3: Cross multiply
    47,876.70x = 66,070.30 × 26,656.42
  4. Step 4: Simplify right side
    47,876.70x = 1,761,197,310.09
  5. Step 5: Solve for x
    x = 1,761,197,310.09/47,876.70
  6. Step 6: Final answer
    x = 36,786.11

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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.