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Finding the Fourth Proportional to 394,705.80, 592,058.70 and 235,038.60

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Solution

The fourth proportional to 394,705.80, 592,058.70 and 235,038.60 is: 352,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,705.80 : 592,058.70 = 235,038.60 : x
  2. Step 2: Convert to fraction form
    394,705.80/592,058.70 = 235,038.60/x
  3. Step 3: Cross multiply
    394,705.80x = 592,058.70 × 235,038.60
  4. Step 4: Simplify right side
    394,705.80x = 139,156,647,965.82
  5. Step 5: Solve for x
    x = 139,156,647,965.82/394,705.80
  6. Step 6: Final answer
    x = 352,557.90

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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.