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Finding the Fourth Proportional to 74,361.56, 102,658.95 and 57,328.47

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Solution

The fourth proportional to 74,361.56, 102,658.95 and 57,328.47 is: 79,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,361.56 : 102,658.95 = 57,328.47 : x
  2. Step 2: Convert to fraction form
    74,361.56/102,658.95 = 57,328.47/x
  3. Step 3: Cross multiply
    74,361.56x = 102,658.95 × 57,328.47
  4. Step 4: Simplify right side
    74,361.56x = 5,885,280,535.31
  5. Step 5: Solve for x
    x = 5,885,280,535.31/74,361.56
  6. Step 6: Final answer
    x = 79,144.13

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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.