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Finding the Fourth Proportional to 79,731.95, 119,598.10 and 74,860.41

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Solution

The fourth proportional to 79,731.95, 119,598.10 and 74,860.41 is: 112,290.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,731.95 : 119,598.10 = 74,860.41 : x
  2. Step 2: Convert to fraction form
    79,731.95/119,598.10 = 74,860.41/x
  3. Step 3: Cross multiply
    79,731.95x = 119,598.10 × 74,860.41
  4. Step 4: Simplify right side
    79,731.95x = 8,953,162,614.07
  5. Step 5: Solve for x
    x = 8,953,162,614.07/79,731.95
  6. Step 6: Final answer
    x = 112,290.77

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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.