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Finding the Fourth Proportional to 51,046.53, 70,444.28 and 28,385.04

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Solution

The fourth proportional to 51,046.53, 70,444.28 and 28,385.04 is: 39,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,046.53 : 70,444.28 = 28,385.04 : x
  2. Step 2: Convert to fraction form
    51,046.53/70,444.28 = 28,385.04/x
  3. Step 3: Cross multiply
    51,046.53x = 70,444.28 × 28,385.04
  4. Step 4: Simplify right side
    51,046.53x = 1,999,563,299.48
  5. Step 5: Solve for x
    x = 1,999,563,299.48/51,046.53
  6. Step 6: Final answer
    x = 39,171.38

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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.