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Finding the Fourth Proportional to 74,262.85, 102,522.56 and 57,354.61

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Solution

The fourth proportional to 74,262.85, 102,522.56 and 57,354.61 is: 79,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,262.85 : 102,522.56 = 57,354.61 : x
  2. Step 2: Convert to fraction form
    74,262.85/102,522.56 = 57,354.61/x
  3. Step 3: Cross multiply
    74,262.85x = 102,522.56 × 57,354.61
  4. Step 4: Simplify right side
    74,262.85x = 5,880,141,445.00
  5. Step 5: Solve for x
    x = 5,880,141,445.00/74,262.85
  6. Step 6: Final answer
    x = 79,180.12

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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.