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Finding the Fourth Proportional to 74,656.76, 103,027.14 and 42,828.62

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Solution

The fourth proportional to 74,656.76, 103,027.14 and 42,828.62 is: 59,103.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,656.76 : 103,027.14 = 42,828.62 : x
  2. Step 2: Convert to fraction form
    74,656.76/103,027.14 = 42,828.62/x
  3. Step 3: Cross multiply
    74,656.76x = 103,027.14 × 42,828.62
  4. Step 4: Simplify right side
    74,656.76x = 4,412,509,713.61
  5. Step 5: Solve for x
    x = 4,412,509,713.61/74,656.76
  6. Step 6: Final answer
    x = 59,103.96

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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.