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Finding the Fourth Proportional to 120,637.98, 181,055.34 and 61,490.52

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Solution

The fourth proportional to 120,637.98, 181,055.34 and 61,490.52 is: 92,285.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,637.98 : 181,055.34 = 61,490.52 : x
  2. Step 2: Convert to fraction form
    120,637.98/181,055.34 = 61,490.52/x
  3. Step 3: Cross multiply
    120,637.98x = 181,055.34 × 61,490.52
  4. Step 4: Simplify right side
    120,637.98x = 11,133,187,005.38
  5. Step 5: Solve for x
    x = 11,133,187,005.38/120,637.98
  6. Step 6: Final answer
    x = 92,285.92

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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.