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Finding the Fourth Proportional to 93,934, 129,642.18 and 58,135.54

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Solution

The fourth proportional to 93,934, 129,642.18 and 58,135.54 is: 80,235.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,934 : 129,642.18 = 58,135.54 : x
  2. Step 2: Convert to fraction form
    93,934/129,642.18 = 58,135.54/x
  3. Step 3: Cross multiply
    93,934x = 129,642.18 × 58,135.54
  4. Step 4: Simplify right side
    93,934x = 7,536,818,141.08
  5. Step 5: Solve for x
    x = 7,536,818,141.08/93,934
  6. Step 6: Final answer
    x = 80,235.25

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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.