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Finding the Fourth Proportional to 74,950.95, 112,370.83 and 45,361.76

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Solution

The fourth proportional to 74,950.95, 112,370.83 and 45,361.76 is: 68,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,950.95 : 112,370.83 = 45,361.76 : x
  2. Step 2: Convert to fraction form
    74,950.95/112,370.83 = 45,361.76/x
  3. Step 3: Cross multiply
    74,950.95x = 112,370.83 × 45,361.76
  4. Step 4: Simplify right side
    74,950.95x = 5,097,337,946.20
  5. Step 5: Solve for x
    x = 5,097,337,946.20/74,950.95
  6. Step 6: Final answer
    x = 68,008.98

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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.