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Finding the Fourth Proportional to 68,579.88, 102,703.68 and 47,460.72

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Solution

The fourth proportional to 68,579.88, 102,703.68 and 47,460.72 is: 71,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,579.88 : 102,703.68 = 47,460.72 : x
  2. Step 2: Convert to fraction form
    68,579.88/102,703.68 = 47,460.72/x
  3. Step 3: Cross multiply
    68,579.88x = 102,703.68 × 47,460.72
  4. Step 4: Simplify right side
    68,579.88x = 4,874,390,599.45
  5. Step 5: Solve for x
    x = 4,874,390,599.45/68,579.88
  6. Step 6: Final answer
    x = 71,076.10

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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.