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Finding the Fourth Proportional to 368,625.81, 553,012.53 and 115,969.89

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Solution

The fourth proportional to 368,625.81, 553,012.53 and 115,969.89 is: 173,978.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,625.81 : 553,012.53 = 115,969.89 : x
  2. Step 2: Convert to fraction form
    368,625.81/553,012.53 = 115,969.89/x
  3. Step 3: Cross multiply
    368,625.81x = 553,012.53 × 115,969.89
  4. Step 4: Simplify right side
    368,625.81x = 64,132,802,272.72
  5. Step 5: Solve for x
    x = 64,132,802,272.72/368,625.81
  6. Step 6: Final answer
    x = 173,978.06

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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.