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Finding the Fourth Proportional to 403,266.30, 604,899.45 and 261,548.70

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Solution

The fourth proportional to 403,266.30, 604,899.45 and 261,548.70 is: 392,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,266.30 : 604,899.45 = 261,548.70 : x
  2. Step 2: Convert to fraction form
    403,266.30/604,899.45 = 261,548.70/x
  3. Step 3: Cross multiply
    403,266.30x = 604,899.45 × 261,548.70
  4. Step 4: Simplify right side
    403,266.30x = 158,210,664,778.22
  5. Step 5: Solve for x
    x = 158,210,664,778.22/403,266.30
  6. Step 6: Final answer
    x = 392,323.05

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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.