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Finding the Fourth Proportional to 117,209.67, 161,748.70 and 63,495.74

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Solution

The fourth proportional to 117,209.67, 161,748.70 and 63,495.74 is: 87,623.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,209.67 : 161,748.70 = 63,495.74 : x
  2. Step 2: Convert to fraction form
    117,209.67/161,748.70 = 63,495.74/x
  3. Step 3: Cross multiply
    117,209.67x = 161,748.70 × 63,495.74
  4. Step 4: Simplify right side
    117,209.67x = 10,270,352,433.06
  5. Step 5: Solve for x
    x = 10,270,352,433.06/117,209.67
  6. Step 6: Final answer
    x = 87,623.76

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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.