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Finding the Fourth Proportional to 325,866.60, 488,411.10 and 136,326.60

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Solution

The fourth proportional to 325,866.60, 488,411.10 and 136,326.60 is: 204,327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,866.60 : 488,411.10 = 136,326.60 : x
  2. Step 2: Convert to fraction form
    325,866.60/488,411.10 = 136,326.60/x
  3. Step 3: Cross multiply
    325,866.60x = 488,411.10 × 136,326.60
  4. Step 4: Simplify right side
    325,866.60x = 66,583,424,665.26
  5. Step 5: Solve for x
    x = 66,583,424,665.26/325,866.60
  6. Step 6: Final answer
    x = 204,327.25

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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.