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Finding the Fourth Proportional to 140,447.99, 193,818.25 and 76,785.81

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Solution

The fourth proportional to 140,447.99, 193,818.25 and 76,785.81 is: 105,964.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,447.99 : 193,818.25 = 76,785.81 : x
  2. Step 2: Convert to fraction form
    140,447.99/193,818.25 = 76,785.81/x
  3. Step 3: Cross multiply
    140,447.99x = 193,818.25 × 76,785.81
  4. Step 4: Simplify right side
    140,447.99x = 14,882,490,688.20
  5. Step 5: Solve for x
    x = 14,882,490,688.20/140,447.99
  6. Step 6: Final answer
    x = 105,964.42

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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.