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Finding the Fourth Proportional to 62,187.68, 85,751.24 and 42,009.54

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Solution

The fourth proportional to 62,187.68, 85,751.24 and 42,009.54 is: 57,927.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,187.68 : 85,751.24 = 42,009.54 : x
  2. Step 2: Convert to fraction form
    62,187.68/85,751.24 = 42,009.54/x
  3. Step 3: Cross multiply
    62,187.68x = 85,751.24 × 42,009.54
  4. Step 4: Simplify right side
    62,187.68x = 3,602,369,936.78
  5. Step 5: Solve for x
    x = 3,602,369,936.78/62,187.68
  6. Step 6: Final answer
    x = 57,927.39

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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.