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Finding the Fourth Proportional to 353,402.40, 530,103.60 and 347,570.40

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Solution

The fourth proportional to 353,402.40, 530,103.60 and 347,570.40 is: 521,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,402.40 : 530,103.60 = 347,570.40 : x
  2. Step 2: Convert to fraction form
    353,402.40/530,103.60 = 347,570.40/x
  3. Step 3: Cross multiply
    353,402.40x = 530,103.60 × 347,570.40
  4. Step 4: Simplify right side
    353,402.40x = 184,248,320,293.44
  5. Step 5: Solve for x
    x = 184,248,320,293.44/353,402.40
  6. Step 6: Final answer
    x = 521,355.60

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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.