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Finding the Fourth Proportional to 353,613.40, 530,420.10 and 347,781.40

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Solution

The fourth proportional to 353,613.40, 530,420.10 and 347,781.40 is: 521,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,613.40 : 530,420.10 = 347,781.40 : x
  2. Step 2: Convert to fraction form
    353,613.40/530,420.10 = 347,781.40/x
  3. Step 3: Cross multiply
    353,613.40x = 530,420.10 × 347,781.40
  4. Step 4: Simplify right side
    353,613.40x = 184,470,244,966.14
  5. Step 5: Solve for x
    x = 184,470,244,966.14/353,613.40
  6. Step 6: Final answer
    x = 521,672.10

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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.