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Finding the Fourth Proportional to 74,819.25, 112,228.88 and 28,039.32

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Solution

The fourth proportional to 74,819.25, 112,228.88 and 28,039.32 is: 42,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,819.25 : 112,228.88 = 28,039.32 : x
  2. Step 2: Convert to fraction form
    74,819.25/112,228.88 = 28,039.32/x
  3. Step 3: Cross multiply
    74,819.25x = 112,228.88 × 28,039.32
  4. Step 4: Simplify right side
    74,819.25x = 3,146,821,339.37
  5. Step 5: Solve for x
    x = 3,146,821,339.37/74,819.25
  6. Step 6: Final answer
    x = 42,058.98

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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.