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Finding the Fourth Proportional to 459,661.41, 689,489.82 and 118,104.53

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Solution

The fourth proportional to 459,661.41, 689,489.82 and 118,104.53 is: 177,156.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,661.41 : 689,489.82 = 118,104.53 : x
  2. Step 2: Convert to fraction form
    459,661.41/689,489.82 = 118,104.53/x
  3. Step 3: Cross multiply
    459,661.41x = 689,489.82 × 118,104.53
  4. Step 4: Simplify right side
    459,661.41x = 81,431,867,683.44
  5. Step 5: Solve for x
    x = 81,431,867,683.44/459,661.41
  6. Step 6: Final answer
    x = 177,156.20

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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.