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Finding the Fourth Proportional to 84,898.96, 117,159.72 and 47,172.40

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Solution

The fourth proportional to 84,898.96, 117,159.72 and 47,172.40 is: 65,097.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,898.96 : 117,159.72 = 47,172.40 : x
  2. Step 2: Convert to fraction form
    84,898.96/117,159.72 = 47,172.40/x
  3. Step 3: Cross multiply
    84,898.96x = 117,159.72 × 47,172.40
  4. Step 4: Simplify right side
    84,898.96x = 5,526,705,175.73
  5. Step 5: Solve for x
    x = 5,526,705,175.73/84,898.96
  6. Step 6: Final answer
    x = 65,097.44

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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.