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Finding the Fourth Proportional to 403,417.40, 603,570.90 and 263,449.40

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Solution

The fourth proportional to 403,417.40, 603,570.90 and 263,449.40 is: 394,158.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,417.40 : 603,570.90 = 263,449.40 : x
  2. Step 2: Convert to fraction form
    403,417.40/603,570.90 = 263,449.40/x
  3. Step 3: Cross multiply
    403,417.40x = 603,570.90 × 263,449.40
  4. Step 4: Simplify right side
    403,417.40x = 159,010,391,462.46
  5. Step 5: Solve for x
    x = 159,010,391,462.46/403,417.40
  6. Step 6: Final answer
    x = 394,158.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.