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Finding the Fourth Proportional to 71,675.29, 107,054.57 and 64,910.80

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Solution

The fourth proportional to 71,675.29, 107,054.57 and 64,910.80 is: 96,951.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,675.29 : 107,054.57 = 64,910.80 : x
  2. Step 2: Convert to fraction form
    71,675.29/107,054.57 = 64,910.80/x
  3. Step 3: Cross multiply
    71,675.29x = 107,054.57 × 64,910.80
  4. Step 4: Simplify right side
    71,675.29x = 6,948,997,782.36
  5. Step 5: Solve for x
    x = 6,948,997,782.36/71,675.29
  6. Step 6: Final answer
    x = 96,951.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.