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Finding the Fourth Proportional to 93,686.80, 140,530.20 and 91,499.80

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Solution

The fourth proportional to 93,686.80, 140,530.20 and 91,499.80 is: 137,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,686.80 : 140,530.20 = 91,499.80 : x
  2. Step 2: Convert to fraction form
    93,686.80/140,530.20 = 91,499.80/x
  3. Step 3: Cross multiply
    93,686.80x = 140,530.20 × 91,499.80
  4. Step 4: Simplify right side
    93,686.80x = 12,858,485,193.96
  5. Step 5: Solve for x
    x = 12,858,485,193.96/93,686.80
  6. Step 6: Final answer
    x = 137,249.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.