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Finding the Fourth Proportional to 174,668.90, 261,816.46 and 90,344.16

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Solution

The fourth proportional to 174,668.90, 261,816.46 and 90,344.16 is: 135,419.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,668.90 : 261,816.46 = 90,344.16 : x
  2. Step 2: Convert to fraction form
    174,668.90/261,816.46 = 90,344.16/x
  3. Step 3: Cross multiply
    174,668.90x = 261,816.46 × 90,344.16
  4. Step 4: Simplify right side
    174,668.90x = 23,653,588,152.87
  5. Step 5: Solve for x
    x = 23,653,588,152.87/174,668.90
  6. Step 6: Final answer
    x = 135,419.57

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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.