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Finding the Fourth Proportional to 170,626.40, 255,613.20 and 91,714.40

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Solution

The fourth proportional to 170,626.40, 255,613.20 and 91,714.40 is: 137,396.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,626.40 : 255,613.20 = 91,714.40 : x
  2. Step 2: Convert to fraction form
    170,626.40/255,613.20 = 91,714.40/x
  3. Step 3: Cross multiply
    170,626.40x = 255,613.20 × 91,714.40
  4. Step 4: Simplify right side
    170,626.40x = 23,443,411,270.08
  5. Step 5: Solve for x
    x = 23,443,411,270.08/170,626.40
  6. Step 6: Final answer
    x = 137,396.15

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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.