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Finding the Fourth Proportional to 92,797.43, 128,060.78 and 50,355.95

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Solution

The fourth proportional to 92,797.43, 128,060.78 and 50,355.95 is: 69,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,797.43 : 128,060.78 = 50,355.95 : x
  2. Step 2: Convert to fraction form
    92,797.43/128,060.78 = 50,355.95/x
  3. Step 3: Cross multiply
    92,797.43x = 128,060.78 × 50,355.95
  4. Step 4: Simplify right side
    92,797.43x = 6,448,621,982.86
  5. Step 5: Solve for x
    x = 6,448,621,982.86/92,797.43
  6. Step 6: Final answer
    x = 69,491.39

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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.