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Finding the Fourth Proportional to 404,686.80, 605,647.80 and 354,920.40

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Solution

The fourth proportional to 404,686.80, 605,647.80 and 354,920.40 is: 531,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,686.80 : 605,647.80 = 354,920.40 : x
  2. Step 2: Convert to fraction form
    404,686.80/605,647.80 = 354,920.40/x
  3. Step 3: Cross multiply
    404,686.80x = 605,647.80 × 354,920.40
  4. Step 4: Simplify right side
    404,686.80x = 214,956,759,435.12
  5. Step 5: Solve for x
    x = 214,956,759,435.12/404,686.80
  6. Step 6: Final answer
    x = 531,168.20

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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.