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Finding the Fourth Proportional to 403,544.80, 605,317.20 and 359,999.20

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Solution

The fourth proportional to 403,544.80, 605,317.20 and 359,999.20 is: 539,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,544.80 : 605,317.20 = 359,999.20 : x
  2. Step 2: Convert to fraction form
    403,544.80/605,317.20 = 359,999.20/x
  3. Step 3: Cross multiply
    403,544.80x = 605,317.20 × 359,999.20
  4. Step 4: Simplify right side
    403,544.80x = 217,913,707,746.24
  5. Step 5: Solve for x
    x = 217,913,707,746.24/403,544.80
  6. Step 6: Final answer
    x = 539,998.80

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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.