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Finding the Fourth Proportional to 92,551.80, 138,878.10 and 50,429.40

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Solution

The fourth proportional to 92,551.80, 138,878.10 and 50,429.40 is: 75,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,551.80 : 138,878.10 = 50,429.40 : x
  2. Step 2: Convert to fraction form
    92,551.80/138,878.10 = 50,429.40/x
  3. Step 3: Cross multiply
    92,551.80x = 138,878.10 × 50,429.40
  4. Step 4: Simplify right side
    92,551.80x = 7,003,539,256.14
  5. Step 5: Solve for x
    x = 7,003,539,256.14/92,551.80
  6. Step 6: Final answer
    x = 75,671.56

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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.