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Finding the Fourth Proportional to 459,361.96, 689,055.90 and 126,937.96

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Solution

The fourth proportional to 459,361.96, 689,055.90 and 126,937.96 is: 190,410.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,361.96 : 689,055.90 = 126,937.96 : x
  2. Step 2: Convert to fraction form
    459,361.96/689,055.90 = 126,937.96/x
  3. Step 3: Cross multiply
    459,361.96x = 689,055.90 × 126,937.96
  4. Step 4: Simplify right side
    459,361.96x = 87,467,350,271.96
  5. Step 5: Solve for x
    x = 87,467,350,271.96/459,361.96
  6. Step 6: Final answer
    x = 190,410.52

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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.