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Finding the Fourth Proportional to 325,874.80, 488,812.20 and 136,302.40

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Solution

The fourth proportional to 325,874.80, 488,812.20 and 136,302.40 is: 204,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,874.80 : 488,812.20 = 136,302.40 : x
  2. Step 2: Convert to fraction form
    325,874.80/488,812.20 = 136,302.40/x
  3. Step 3: Cross multiply
    325,874.80x = 488,812.20 × 136,302.40
  4. Step 4: Simplify right side
    325,874.80x = 66,626,276,009.28
  5. Step 5: Solve for x
    x = 66,626,276,009.28/325,874.80
  6. Step 6: Final answer
    x = 204,453.60

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1.5x scale

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.