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Finding the Fourth Proportional to 266,093.30, 398,928 and 153,645.86

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Solution

The fourth proportional to 266,093.30, 398,928 and 153,645.86 is: 230,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,093.30 : 398,928 = 153,645.86 : x
  2. Step 2: Convert to fraction form
    266,093.30/398,928 = 153,645.86/x
  3. Step 3: Cross multiply
    266,093.30x = 398,928 × 153,645.86
  4. Step 4: Simplify right side
    266,093.30x = 61,293,635,638.08
  5. Step 5: Solve for x
    x = 61,293,635,638.08/266,093.30
  6. Step 6: Final answer
    x = 230,346.41

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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.