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Finding the Fourth Proportional to 395,893.80, 593,451.90 and 353,903.40

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Solution

The fourth proportional to 395,893.80, 593,451.90 and 353,903.40 is: 530,507.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,893.80 : 593,451.90 = 353,903.40 : x
  2. Step 2: Convert to fraction form
    395,893.80/593,451.90 = 353,903.40/x
  3. Step 3: Cross multiply
    395,893.80x = 593,451.90 × 353,903.40
  4. Step 4: Simplify right side
    395,893.80x = 210,024,645,146.46
  5. Step 5: Solve for x
    x = 210,024,645,146.46/395,893.80
  6. Step 6: Final answer
    x = 530,507.54

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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.