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Finding the Fourth Proportional to 50,859.90, 76,289.85 and 49,985.10

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Solution

The fourth proportional to 50,859.90, 76,289.85 and 49,985.10 is: 74,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,859.90 : 76,289.85 = 49,985.10 : x
  2. Step 2: Convert to fraction form
    50,859.90/76,289.85 = 49,985.10/x
  3. Step 3: Cross multiply
    50,859.90x = 76,289.85 × 49,985.10
  4. Step 4: Simplify right side
    50,859.90x = 3,813,355,781.24
  5. Step 5: Solve for x
    x = 3,813,355,781.24/50,859.90
  6. Step 6: Final answer
    x = 74,977.65

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Similar ratio
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1.5x scale

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.