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Finding the Fourth Proportional to 84,620.99, 126,931.49 and 43,097.15

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Solution

The fourth proportional to 84,620.99, 126,931.49 and 43,097.15 is: 64,645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,620.99 : 126,931.49 = 43,097.15 : x
  2. Step 2: Convert to fraction form
    84,620.99/126,931.49 = 43,097.15/x
  3. Step 3: Cross multiply
    84,620.99x = 126,931.49 × 43,097.15
  4. Step 4: Simplify right side
    84,620.99x = 5,470,385,248.77
  5. Step 5: Solve for x
    x = 5,470,385,248.77/84,620.99
  6. Step 6: Final answer
    x = 64,645.73

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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.