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Finding the Fourth Proportional to 170,911.90, 256,367.85 and 170,911.90

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Solution

The fourth proportional to 170,911.90, 256,367.85 and 170,911.90 is: 256,367.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,911.90 : 256,367.85 = 170,911.90 : x
  2. Step 2: Convert to fraction form
    170,911.90/256,367.85 = 170,911.90/x
  3. Step 3: Cross multiply
    170,911.90x = 256,367.85 × 170,911.90
  4. Step 4: Simplify right side
    170,911.90x = 43,816,316,342.42
  5. Step 5: Solve for x
    x = 43,816,316,342.42/170,911.90
  6. Step 6: Final answer
    x = 256,367.85

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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.