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Finding the Fourth Proportional to 325,673.20, 488,279.40 and 125,916.40

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Solution

The fourth proportional to 325,673.20, 488,279.40 and 125,916.40 is: 188,785.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,673.20 : 488,279.40 = 125,916.40 : x
  2. Step 2: Convert to fraction form
    325,673.20/488,279.40 = 125,916.40/x
  3. Step 3: Cross multiply
    325,673.20x = 488,279.40 × 125,916.40
  4. Step 4: Simplify right side
    325,673.20x = 61,482,384,242.16
  5. Step 5: Solve for x
    x = 61,482,384,242.16/325,673.20
  6. Step 6: Final answer
    x = 188,785.52

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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.