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Finding the Fourth Proportional to 403,709.80, 604,835.70 and 235,092.10

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Solution

The fourth proportional to 403,709.80, 604,835.70 and 235,092.10 is: 352,213.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,709.80 : 604,835.70 = 235,092.10 : x
  2. Step 2: Convert to fraction form
    403,709.80/604,835.70 = 235,092.10/x
  3. Step 3: Cross multiply
    403,709.80x = 604,835.70 × 235,092.10
  4. Step 4: Simplify right side
    403,709.80x = 142,192,094,867.97
  5. Step 5: Solve for x
    x = 142,192,094,867.97/403,709.80
  6. Step 6: Final answer
    x = 352,213.63

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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.