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Finding the Fourth Proportional to 86,198.34, 118,955.16 and 47,960.94

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Solution

The fourth proportional to 86,198.34, 118,955.16 and 47,960.94 is: 66,186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,198.34 : 118,955.16 = 47,960.94 : x
  2. Step 2: Convert to fraction form
    86,198.34/118,955.16 = 47,960.94/x
  3. Step 3: Cross multiply
    86,198.34x = 118,955.16 × 47,960.94
  4. Step 4: Simplify right side
    86,198.34x = 5,705,201,291.45
  5. Step 5: Solve for x
    x = 5,705,201,291.45/86,198.34
  6. Step 6: Final answer
    x = 66,186.90

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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.