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Finding the Fourth Proportional to 368,221.55, 552,386.99 and 115,522.81

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Solution

The fourth proportional to 368,221.55, 552,386.99 and 115,522.81 is: 173,301.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,221.55 : 552,386.99 = 115,522.81 : x
  2. Step 2: Convert to fraction form
    368,221.55/552,386.99 = 115,522.81/x
  3. Step 3: Cross multiply
    368,221.55x = 552,386.99 × 115,522.81
  4. Step 4: Simplify right side
    368,221.55x = 63,813,296,200.08
  5. Step 5: Solve for x
    x = 63,813,296,200.08/368,221.55
  6. Step 6: Final answer
    x = 173,301.36

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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.