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Finding the Fourth Proportional to 354,410.70, 531,432.45 and 105,060.30

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Solution

The fourth proportional to 354,410.70, 531,432.45 and 105,060.30 is: 157,536.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,410.70 : 531,432.45 = 105,060.30 : x
  2. Step 2: Convert to fraction form
    354,410.70/531,432.45 = 105,060.30/x
  3. Step 3: Cross multiply
    354,410.70x = 531,432.45 × 105,060.30
  4. Step 4: Simplify right side
    354,410.70x = 55,832,452,626.74
  5. Step 5: Solve for x
    x = 55,832,452,626.74/354,410.70
  6. Step 6: Final answer
    x = 157,536.02

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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.