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Finding the Fourth Proportional to 340,418.86, 469,768.89 and 189,515.86

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Solution

The fourth proportional to 340,418.86, 469,768.89 and 189,515.86 is: 261,526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,418.86 : 469,768.89 = 189,515.86 : x
  2. Step 2: Convert to fraction form
    340,418.86/469,768.89 = 189,515.86/x
  3. Step 3: Cross multiply
    340,418.86x = 469,768.89 × 189,515.86
  4. Step 4: Simplify right side
    340,418.86x = 89,028,655,189.60
  5. Step 5: Solve for x
    x = 89,028,655,189.60/340,418.86
  6. Step 6: Final answer
    x = 261,526.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.