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Finding the Fourth Proportional to 73,388.60, 110,048.19 and 28,431.01

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Solution

The fourth proportional to 73,388.60, 110,048.19 and 28,431.01 is: 42,633.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,388.60 : 110,048.19 = 28,431.01 : x
  2. Step 2: Convert to fraction form
    73,388.60/110,048.19 = 28,431.01/x
  3. Step 3: Cross multiply
    73,388.60x = 110,048.19 × 28,431.01
  4. Step 4: Simplify right side
    73,388.60x = 3,128,781,461.20
  5. Step 5: Solve for x
    x = 3,128,781,461.20/73,388.60
  6. Step 6: Final answer
    x = 42,633.07

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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.