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Finding the Fourth Proportional to 343,817.56, 515,609.55 and 119,125.55

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Solution

The fourth proportional to 343,817.56, 515,609.55 and 119,125.55 is: 178,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,817.56 : 515,609.55 = 119,125.55 : x
  2. Step 2: Convert to fraction form
    343,817.56/515,609.55 = 119,125.55/x
  3. Step 3: Cross multiply
    343,817.56x = 515,609.55 × 119,125.55
  4. Step 4: Simplify right side
    343,817.56x = 61,422,272,518.03
  5. Step 5: Solve for x
    x = 61,422,272,518.03/343,817.56
  6. Step 6: Final answer
    x = 178,647.86

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1.5x scale

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.