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Finding the Fourth Proportional to 404,680.80, 605,638.80 and 354,914.40

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Solution

The fourth proportional to 404,680.80, 605,638.80 and 354,914.40 is: 531,159.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,680.80 : 605,638.80 = 354,914.40 : x
  2. Step 2: Convert to fraction form
    404,680.80/605,638.80 = 354,914.40/x
  3. Step 3: Cross multiply
    404,680.80x = 605,638.80 × 354,914.40
  4. Step 4: Simplify right side
    404,680.80x = 214,949,931,318.72
  5. Step 5: Solve for x
    x = 214,949,931,318.72/404,680.80
  6. Step 6: Final answer
    x = 531,159.20

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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.