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Finding the Fourth Proportional to 92,398.80, 138,362.04 and 50,800.08

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Solution

The fourth proportional to 92,398.80, 138,362.04 and 50,800.08 is: 76,070.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,398.80 : 138,362.04 = 50,800.08 : x
  2. Step 2: Convert to fraction form
    92,398.80/138,362.04 = 50,800.08/x
  3. Step 3: Cross multiply
    92,398.80x = 138,362.04 × 50,800.08
  4. Step 4: Simplify right side
    92,398.80x = 7,028,802,700.96
  5. Step 5: Solve for x
    x = 7,028,802,700.96/92,398.80
  6. Step 6: Final answer
    x = 76,070.28

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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.