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Finding the Fourth Proportional to 86,910.47, 119,936.44 and 47,166.47

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Solution

The fourth proportional to 86,910.47, 119,936.44 and 47,166.47 is: 65,089.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,910.47 : 119,936.44 = 47,166.47 : x
  2. Step 2: Convert to fraction form
    86,910.47/119,936.44 = 47,166.47/x
  3. Step 3: Cross multiply
    86,910.47x = 119,936.44 × 47,166.47
  4. Step 4: Simplify right side
    86,910.47x = 5,656,978,499.17
  5. Step 5: Solve for x
    x = 5,656,978,499.17/86,910.47
  6. Step 6: Final answer
    x = 65,089.72

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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.