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Finding the Fourth Proportional to 119,907.74, 179,841.45 and 43,990.58

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Solution

The fourth proportional to 119,907.74, 179,841.45 and 43,990.58 is: 65,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,907.74 : 179,841.45 = 43,990.58 : x
  2. Step 2: Convert to fraction form
    119,907.74/179,841.45 = 43,990.58/x
  3. Step 3: Cross multiply
    119,907.74x = 179,841.45 × 43,990.58
  4. Step 4: Simplify right side
    119,907.74x = 7,911,329,693.54
  5. Step 5: Solve for x
    x = 7,911,329,693.54/119,907.74
  6. Step 6: Final answer
    x = 65,978.47

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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.