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Finding the Fourth Proportional to 217,376.60, 326,064.90 and 149,725.40

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Solution

The fourth proportional to 217,376.60, 326,064.90 and 149,725.40 is: 224,588.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,376.60 : 326,064.90 = 149,725.40 : x
  2. Step 2: Convert to fraction form
    217,376.60/326,064.90 = 149,725.40/x
  3. Step 3: Cross multiply
    217,376.60x = 326,064.90 × 149,725.40
  4. Step 4: Simplify right side
    217,376.60x = 48,820,197,578.46
  5. Step 5: Solve for x
    x = 48,820,197,578.46/217,376.60
  6. Step 6: Final answer
    x = 224,588.10

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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.