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Finding the Fourth Proportional to 68,056.80, 93,904.54 and 39,757.02

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Solution

The fourth proportional to 68,056.80, 93,904.54 and 39,757.02 is: 54,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,056.80 : 93,904.54 = 39,757.02 : x
  2. Step 2: Convert to fraction form
    68,056.80/93,904.54 = 39,757.02/x
  3. Step 3: Cross multiply
    68,056.80x = 93,904.54 × 39,757.02
  4. Step 4: Simplify right side
    68,056.80x = 3,733,364,674.87
  5. Step 5: Solve for x
    x = 3,733,364,674.87/68,056.80
  6. Step 6: Final answer
    x = 54,856.60

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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.