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Finding the Fourth Proportional to 191,777.12, 287,677.21 and 58,658.53

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Solution

The fourth proportional to 191,777.12, 287,677.21 and 58,658.53 is: 87,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,777.12 : 287,677.21 = 58,658.53 : x
  2. Step 2: Convert to fraction form
    191,777.12/287,677.21 = 58,658.53/x
  3. Step 3: Cross multiply
    191,777.12x = 287,677.21 × 58,658.53
  4. Step 4: Simplify right side
    191,777.12x = 16,874,721,062.57
  5. Step 5: Solve for x
    x = 16,874,721,062.57/191,777.12
  6. Step 6: Final answer
    x = 87,991.32

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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.