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Finding the Fourth Proportional to 86,197.86, 118,913.13 and 50,389.38

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Solution

The fourth proportional to 86,197.86, 118,913.13 and 50,389.38 is: 69,514.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,197.86 : 118,913.13 = 50,389.38 : x
  2. Step 2: Convert to fraction form
    86,197.86/118,913.13 = 50,389.38/x
  3. Step 3: Cross multiply
    86,197.86x = 118,913.13 × 50,389.38
  4. Step 4: Simplify right side
    86,197.86x = 5,991,958,894.56
  5. Step 5: Solve for x
    x = 5,991,958,894.56/86,197.86
  6. Step 6: Final answer
    x = 69,514.01

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1.5x scale

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.