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Finding the Fourth Proportional to 83,668.90, 115,462.83 and 50,134.90

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Solution

The fourth proportional to 83,668.90, 115,462.83 and 50,134.90 is: 69,186.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,668.90 : 115,462.83 = 50,134.90 : x
  2. Step 2: Convert to fraction form
    83,668.90/115,462.83 = 50,134.90/x
  3. Step 3: Cross multiply
    83,668.90x = 115,462.83 × 50,134.90
  4. Step 4: Simplify right side
    83,668.90x = 5,788,717,435.77
  5. Step 5: Solve for x
    x = 5,788,717,435.77/83,668.90
  6. Step 6: Final answer
    x = 69,186.01

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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.