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Finding the Fourth Proportional to 75,800.81, 113,700.76 and 19,640.78

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Solution

The fourth proportional to 75,800.81, 113,700.76 and 19,640.78 is: 29,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,800.81 : 113,700.76 = 19,640.78 : x
  2. Step 2: Convert to fraction form
    75,800.81/113,700.76 = 19,640.78/x
  3. Step 3: Cross multiply
    75,800.81x = 113,700.76 × 19,640.78
  4. Step 4: Simplify right side
    75,800.81x = 2,233,171,532.24
  5. Step 5: Solve for x
    x = 2,233,171,532.24/75,800.81
  6. Step 6: Final answer
    x = 29,461.05

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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.