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Finding the Fourth Proportional to 255,690.60, 352,774.80 and 148,239.18

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Solution

The fourth proportional to 255,690.60, 352,774.80 and 148,239.18 is: 204,524.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,690.60 : 352,774.80 = 148,239.18 : x
  2. Step 2: Convert to fraction form
    255,690.60/352,774.80 = 148,239.18/x
  3. Step 3: Cross multiply
    255,690.60x = 352,774.80 × 148,239.18
  4. Step 4: Simplify right side
    255,690.60x = 52,295,047,076.66
  5. Step 5: Solve for x
    x = 52,295,047,076.66/255,690.60
  6. Step 6: Final answer
    x = 204,524.71

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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.