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Finding the Fourth Proportional to 354,309.04, 531,465.48 and 104,993.20

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Solution

The fourth proportional to 354,309.04, 531,465.48 and 104,993.20 is: 157,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,309.04 : 531,465.48 = 104,993.20 : x
  2. Step 2: Convert to fraction form
    354,309.04/531,465.48 = 104,993.20/x
  3. Step 3: Cross multiply
    354,309.04x = 531,465.48 × 104,993.20
  4. Step 4: Simplify right side
    354,309.04x = 55,800,261,434.74
  5. Step 5: Solve for x
    x = 55,800,261,434.74/354,309.04
  6. Step 6: Final answer
    x = 157,490.37

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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.