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Finding the Fourth Proportional to 71,987.99, 107,894.42 and 50,934.11

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Solution

The fourth proportional to 71,987.99, 107,894.42 and 50,934.11 is: 76,339.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,987.99 : 107,894.42 = 50,934.11 : x
  2. Step 2: Convert to fraction form
    71,987.99/107,894.42 = 50,934.11/x
  3. Step 3: Cross multiply
    71,987.99x = 107,894.42 × 50,934.11
  4. Step 4: Simplify right side
    71,987.99x = 5,495,506,256.67
  5. Step 5: Solve for x
    x = 5,495,506,256.67/71,987.99
  6. Step 6: Final answer
    x = 76,339.21

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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.