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Finding the Fourth Proportional to 31,294.53, 46,942.00 and 7,921.04

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Solution

The fourth proportional to 31,294.53, 46,942.00 and 7,921.04 is: 11,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,294.53 : 46,942.00 = 7,921.04 : x
  2. Step 2: Convert to fraction form
    31,294.53/46,942.00 = 7,921.04/x
  3. Step 3: Cross multiply
    31,294.53x = 46,942.00 × 7,921.04
  4. Step 4: Simplify right side
    31,294.53x = 371,829,205.17
  5. Step 5: Solve for x
    x = 371,829,205.17/31,294.53
  6. Step 6: Final answer
    x = 11,881.60

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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.