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Finding the Fourth Proportional to 393,091.80, 589,637.70 and 244,278.60

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Solution

The fourth proportional to 393,091.80, 589,637.70 and 244,278.60 is: 366,417.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,091.80 : 589,637.70 = 244,278.60 : x
  2. Step 2: Convert to fraction form
    393,091.80/589,637.70 = 244,278.60/x
  3. Step 3: Cross multiply
    393,091.80x = 589,637.70 × 244,278.60
  4. Step 4: Simplify right side
    393,091.80x = 144,035,871,863.22
  5. Step 5: Solve for x
    x = 144,035,871,863.22/393,091.80
  6. Step 6: Final answer
    x = 366,417.90

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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.