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Finding the Fourth Proportional to 393,722.88, 590,633.04 and 141,030.48

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Solution

The fourth proportional to 393,722.88, 590,633.04 and 141,030.48 is: 211,563.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,722.88 : 590,633.04 = 141,030.48 : x
  2. Step 2: Convert to fraction form
    393,722.88/590,633.04 = 141,030.48/x
  3. Step 3: Cross multiply
    393,722.88x = 590,633.04 × 141,030.48
  4. Step 4: Simplify right side
    393,722.88x = 83,297,261,135.06
  5. Step 5: Solve for x
    x = 83,297,261,135.06/393,722.88
  6. Step 6: Final answer
    x = 211,563.17

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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.