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Finding the Fourth Proportional to 68,084.54, 93,890.68 and 45,424.44

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Solution

The fourth proportional to 68,084.54, 93,890.68 and 45,424.44 is: 62,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,084.54 : 93,890.68 = 45,424.44 : x
  2. Step 2: Convert to fraction form
    68,084.54/93,890.68 = 45,424.44/x
  3. Step 3: Cross multiply
    68,084.54x = 93,890.68 × 45,424.44
  4. Step 4: Simplify right side
    68,084.54x = 4,264,931,560.22
  5. Step 5: Solve for x
    x = 4,264,931,560.22/68,084.54
  6. Step 6: Final answer
    x = 62,641.70

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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.