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Finding the Fourth Proportional to 118,703.16, 178,072.28 and 34,452.40

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Solution

The fourth proportional to 118,703.16, 178,072.28 and 34,452.40 is: 51,683.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,703.16 : 178,072.28 = 34,452.40 : x
  2. Step 2: Convert to fraction form
    118,703.16/178,072.28 = 34,452.40/x
  3. Step 3: Cross multiply
    118,703.16x = 178,072.28 × 34,452.40
  4. Step 4: Simplify right side
    118,703.16x = 6,135,017,419.47
  5. Step 5: Solve for x
    x = 6,135,017,419.47/118,703.16
  6. Step 6: Final answer
    x = 51,683.69

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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.