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Finding the Fourth Proportional to 92,909.96, 128,216.42 and 50,468.48

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Solution

The fourth proportional to 92,909.96, 128,216.42 and 50,468.48 is: 69,646.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,909.96 : 128,216.42 = 50,468.48 : x
  2. Step 2: Convert to fraction form
    92,909.96/128,216.42 = 50,468.48/x
  3. Step 3: Cross multiply
    92,909.96x = 128,216.42 × 50,468.48
  4. Step 4: Simplify right side
    92,909.96x = 6,470,887,576.10
  5. Step 5: Solve for x
    x = 6,470,887,576.10/92,909.96
  6. Step 6: Final answer
    x = 69,646.87

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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.