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Finding the Fourth Proportional to 86,661.90, 119,582.42 and 50,838.84

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Solution

The fourth proportional to 86,661.90, 119,582.42 and 50,838.84 is: 70,151.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,661.90 : 119,582.42 = 50,838.84 : x
  2. Step 2: Convert to fraction form
    86,661.90/119,582.42 = 50,838.84/x
  3. Step 3: Cross multiply
    86,661.90x = 119,582.42 × 50,838.84
  4. Step 4: Simplify right side
    86,661.90x = 6,079,431,195.86
  5. Step 5: Solve for x
    x = 6,079,431,195.86/86,661.90
  6. Step 6: Final answer
    x = 70,151.14

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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.