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Finding the Fourth Proportional to 92,806.60, 139,196.92 and 30,469

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Solution

The fourth proportional to 92,806.60, 139,196.92 and 30,469 is: 45,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,806.60 : 139,196.92 = 30,469 : x
  2. Step 2: Convert to fraction form
    92,806.60/139,196.92 = 30,469/x
  3. Step 3: Cross multiply
    92,806.60x = 139,196.92 × 30,469
  4. Step 4: Simplify right side
    92,806.60x = 4,241,190,955.48
  5. Step 5: Solve for x
    x = 4,241,190,955.48/92,806.60
  6. Step 6: Final answer
    x = 45,699.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.