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Finding the Fourth Proportional to 92,834.81, 128,111.92 and 50,393.34

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Solution

The fourth proportional to 92,834.81, 128,111.92 and 50,393.34 is: 69,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,834.81 : 128,111.92 = 50,393.34 : x
  2. Step 2: Convert to fraction form
    92,834.81/128,111.92 = 50,393.34/x
  3. Step 3: Cross multiply
    92,834.81x = 128,111.92 × 50,393.34
  4. Step 4: Simplify right side
    92,834.81x = 6,455,987,542.61
  5. Step 5: Solve for x
    x = 6,455,987,542.61/92,834.81
  6. Step 6: Final answer
    x = 69,542.75

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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.