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Finding the Fourth Proportional to 123,605.80, 185,466.30 and 92,501.80

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Solution

The fourth proportional to 123,605.80, 185,466.30 and 92,501.80 is: 138,795.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,605.80 : 185,466.30 = 92,501.80 : x
  2. Step 2: Convert to fraction form
    123,605.80/185,466.30 = 92,501.80/x
  3. Step 3: Cross multiply
    123,605.80x = 185,466.30 × 92,501.80
  4. Step 4: Simplify right side
    123,605.80x = 17,155,966,589.34
  5. Step 5: Solve for x
    x = 17,155,966,589.34/123,605.80
  6. Step 6: Final answer
    x = 138,795.81

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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.