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Finding the Fourth Proportional to 224,609.40, 336,914.10 and 91,421.10

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Solution

The fourth proportional to 224,609.40, 336,914.10 and 91,421.10 is: 137,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,609.40 : 336,914.10 = 91,421.10 : x
  2. Step 2: Convert to fraction form
    224,609.40/336,914.10 = 91,421.10/x
  3. Step 3: Cross multiply
    224,609.40x = 336,914.10 × 91,421.10
  4. Step 4: Simplify right side
    224,609.40x = 30,801,057,627.51
  5. Step 5: Solve for x
    x = 30,801,057,627.51/224,609.40
  6. Step 6: Final answer
    x = 137,131.65

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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.