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Finding the Fourth Proportional to 86,202.67, 118,956.70 and 47,436.88

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Solution

The fourth proportional to 86,202.67, 118,956.70 and 47,436.88 is: 65,461.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,202.67 : 118,956.70 = 47,436.88 : x
  2. Step 2: Convert to fraction form
    86,202.67/118,956.70 = 47,436.88/x
  3. Step 3: Cross multiply
    86,202.67x = 118,956.70 × 47,436.88
  4. Step 4: Simplify right side
    86,202.67x = 5,642,934,703.10
  5. Step 5: Solve for x
    x = 5,642,934,703.10/86,202.67
  6. Step 6: Final answer
    x = 65,461.25

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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.