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Finding the Fourth Proportional to 68,101.61, 93,971.21 and 37,880.91

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Solution

The fourth proportional to 68,101.61, 93,971.21 and 37,880.91 is: 52,270.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,101.61 : 93,971.21 = 37,880.91 : x
  2. Step 2: Convert to fraction form
    68,101.61/93,971.21 = 37,880.91/x
  3. Step 3: Cross multiply
    68,101.61x = 93,971.21 × 37,880.91
  4. Step 4: Simplify right side
    68,101.61x = 3,559,714,759.20
  5. Step 5: Solve for x
    x = 3,559,714,759.20/68,101.61
  6. Step 6: Final answer
    x = 52,270.64

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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.