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Finding the Fourth Proportional to 103,958, 156,006.12 and 38,294

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Solution

The fourth proportional to 103,958, 156,006.12 and 38,294 is: 57,466.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,958 : 156,006.12 = 38,294 : x
  2. Step 2: Convert to fraction form
    103,958/156,006.12 = 38,294/x
  3. Step 3: Cross multiply
    103,958x = 156,006.12 × 38,294
  4. Step 4: Simplify right side
    103,958x = 5,974,098,359.28
  5. Step 5: Solve for x
    x = 5,974,098,359.28/103,958
  6. Step 6: Final answer
    x = 57,466.46

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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.