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Finding the Fourth Proportional to 188,707.76, 283,052.48 and 70,369.90

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Solution

The fourth proportional to 188,707.76, 283,052.48 and 70,369.90 is: 105,551.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,707.76 : 283,052.48 = 70,369.90 : x
  2. Step 2: Convert to fraction form
    188,707.76/283,052.48 = 70,369.90/x
  3. Step 3: Cross multiply
    188,707.76x = 283,052.48 × 70,369.90
  4. Step 4: Simplify right side
    188,707.76x = 19,918,373,652.87
  5. Step 5: Solve for x
    x = 19,918,373,652.87/188,707.76
  6. Step 6: Final answer
    x = 105,551.43

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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.