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Finding the Fourth Proportional to 118,907.56, 178,371.06 and 59,712.76

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Solution

The fourth proportional to 118,907.56, 178,371.06 and 59,712.76 is: 89,574.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,907.56 : 178,371.06 = 59,712.76 : x
  2. Step 2: Convert to fraction form
    118,907.56/178,371.06 = 59,712.76/x
  3. Step 3: Cross multiply
    118,907.56x = 178,371.06 × 59,712.76
  4. Step 4: Simplify right side
    118,907.56x = 10,651,028,296.73
  5. Step 5: Solve for x
    x = 10,651,028,296.73/118,907.56
  6. Step 6: Final answer
    x = 89,574.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.