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Finding the Fourth Proportional to 558,880.64, 838,109.48 and 239,019.20

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Solution

The fourth proportional to 558,880.64, 838,109.48 and 239,019.20 is: 358,438.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,880.64 : 838,109.48 = 239,019.20 : x
  2. Step 2: Convert to fraction form
    558,880.64/838,109.48 = 239,019.20/x
  3. Step 3: Cross multiply
    558,880.64x = 838,109.48 × 239,019.20
  4. Step 4: Simplify right side
    558,880.64x = 200,324,257,422.02
  5. Step 5: Solve for x
    x = 200,324,257,422.02/558,880.64
  6. Step 6: Final answer
    x = 358,438.36

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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.