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Finding the Fourth Proportional to 76,185.78, 114,234.90 and 40,603.30

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Solution

The fourth proportional to 76,185.78, 114,234.90 and 40,603.30 is: 60,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,185.78 : 114,234.90 = 40,603.30 : x
  2. Step 2: Convert to fraction form
    76,185.78/114,234.90 = 40,603.30/x
  3. Step 3: Cross multiply
    76,185.78x = 114,234.90 × 40,603.30
  4. Step 4: Simplify right side
    76,185.78x = 4,638,313,915.17
  5. Step 5: Solve for x
    x = 4,638,313,915.17/76,185.78
  6. Step 6: Final answer
    x = 60,881.62

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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.