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Finding the Fourth Proportional to 76,034.66, 104,918.67 and 42,038.56

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Solution

The fourth proportional to 76,034.66, 104,918.67 and 42,038.56 is: 58,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,034.66 : 104,918.67 = 42,038.56 : x
  2. Step 2: Convert to fraction form
    76,034.66/104,918.67 = 42,038.56/x
  3. Step 3: Cross multiply
    76,034.66x = 104,918.67 × 42,038.56
  4. Step 4: Simplify right side
    76,034.66x = 4,410,629,384.42
  5. Step 5: Solve for x
    x = 4,410,629,384.42/76,034.66
  6. Step 6: Final answer
    x = 58,008.14

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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.