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Finding the Fourth Proportional to 85,404.92, 117,849.80 and 49,587.93

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Solution

The fourth proportional to 85,404.92, 117,849.80 and 49,587.93 is: 68,426.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,404.92 : 117,849.80 = 49,587.93 : x
  2. Step 2: Convert to fraction form
    85,404.92/117,849.80 = 49,587.93/x
  3. Step 3: Cross multiply
    85,404.92x = 117,849.80 × 49,587.93
  4. Step 4: Simplify right side
    85,404.92x = 5,843,927,756.88
  5. Step 5: Solve for x
    x = 5,843,927,756.88/85,404.92
  6. Step 6: Final answer
    x = 68,426.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.