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Finding the Fourth Proportional to 57,957.96, 79,980.66 and 34,079.40

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Solution

The fourth proportional to 57,957.96, 79,980.66 and 34,079.40 is: 47,028.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,957.96 : 79,980.66 = 34,079.40 : x
  2. Step 2: Convert to fraction form
    57,957.96/79,980.66 = 34,079.40/x
  3. Step 3: Cross multiply
    57,957.96x = 79,980.66 × 34,079.40
  4. Step 4: Simplify right side
    57,957.96x = 2,725,692,904.40
  5. Step 5: Solve for x
    x = 2,725,692,904.40/57,957.96
  6. Step 6: Final answer
    x = 47,028.79

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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.