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Finding the Fourth Proportional to 440,705.53, 661,058.51 and 290,910.81

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Solution

The fourth proportional to 440,705.53, 661,058.51 and 290,910.81 is: 436,366.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,705.53 : 661,058.51 = 290,910.81 : x
  2. Step 2: Convert to fraction form
    440,705.53/661,058.51 = 290,910.81/x
  3. Step 3: Cross multiply
    440,705.53x = 661,058.51 × 290,910.81
  4. Step 4: Simplify right side
    440,705.53x = 192,309,066,601.49
  5. Step 5: Solve for x
    x = 192,309,066,601.49/440,705.53
  6. Step 6: Final answer
    x = 436,366.36

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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.