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Finding the Fourth Proportional to 73,488.69, 110,219.17 and 28,509.95

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Solution

The fourth proportional to 73,488.69, 110,219.17 and 28,509.95 is: 42,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,488.69 : 110,219.17 = 28,509.95 : x
  2. Step 2: Convert to fraction form
    73,488.69/110,219.17 = 28,509.95/x
  3. Step 3: Cross multiply
    73,488.69x = 110,219.17 × 28,509.95
  4. Step 4: Simplify right side
    73,488.69x = 3,142,343,025.74
  5. Step 5: Solve for x
    x = 3,142,343,025.74/73,488.69
  6. Step 6: Final answer
    x = 42,759.55

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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.