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Finding the Fourth Proportional to 70,587.72, 105,788.08 and 33,080.68

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Solution

The fourth proportional to 70,587.72, 105,788.08 and 33,080.68 is: 49,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,587.72 : 105,788.08 = 33,080.68 : x
  2. Step 2: Convert to fraction form
    70,587.72/105,788.08 = 33,080.68/x
  3. Step 3: Cross multiply
    70,587.72x = 105,788.08 × 33,080.68
  4. Step 4: Simplify right side
    70,587.72x = 3,499,541,622.29
  5. Step 5: Solve for x
    x = 3,499,541,622.29/70,587.72
  6. Step 6: Final answer
    x = 49,577.20

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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.