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Finding the Fourth Proportional to 353,298.60, 530,174.70 and 195,640.20

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Solution

The fourth proportional to 353,298.60, 530,174.70 and 195,640.20 is: 293,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,298.60 : 530,174.70 = 195,640.20 : x
  2. Step 2: Convert to fraction form
    353,298.60/530,174.70 = 195,640.20/x
  3. Step 3: Cross multiply
    353,298.60x = 530,174.70 × 195,640.20
  4. Step 4: Simplify right side
    353,298.60x = 103,723,484,342.94
  5. Step 5: Solve for x
    x = 103,723,484,342.94/353,298.60
  6. Step 6: Final answer
    x = 293,585.89

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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.