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Finding the Fourth Proportional to 403,921.20, 605,590.20 and 226,482.60

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Solution

The fourth proportional to 403,921.20, 605,590.20 and 226,482.60 is: 339,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,921.20 : 605,590.20 = 226,482.60 : x
  2. Step 2: Convert to fraction form
    403,921.20/605,590.20 = 226,482.60/x
  3. Step 3: Cross multiply
    403,921.20x = 605,590.20 × 226,482.60
  4. Step 4: Simplify right side
    403,921.20x = 137,155,643,030.52
  5. Step 5: Solve for x
    x = 137,155,643,030.52/403,921.20
  6. Step 6: Final answer
    x = 339,560.40

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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.