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Finding the Fourth Proportional to 263,345.60, 395,009.52 and 105,531.68

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Solution

The fourth proportional to 263,345.60, 395,009.52 and 105,531.68 is: 158,293.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,345.60 : 395,009.52 = 105,531.68 : x
  2. Step 2: Convert to fraction form
    263,345.60/395,009.52 = 105,531.68/x
  3. Step 3: Cross multiply
    263,345.60x = 395,009.52 × 105,531.68
  4. Step 4: Simplify right side
    263,345.60x = 41,686,018,261.59
  5. Step 5: Solve for x
    x = 41,686,018,261.59/263,345.60
  6. Step 6: Final answer
    x = 158,293.96

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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.