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Finding the Fourth Proportional to 204,810.81, 307,355.54 and 125,683.53

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Solution

The fourth proportional to 204,810.81, 307,355.54 and 125,683.53 is: 188,610.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,810.81 : 307,355.54 = 125,683.53 : x
  2. Step 2: Convert to fraction form
    204,810.81/307,355.54 = 125,683.53/x
  3. Step 3: Cross multiply
    204,810.81x = 307,355.54 × 125,683.53
  4. Step 4: Simplify right side
    204,810.81x = 38,629,528,603.84
  5. Step 5: Solve for x
    x = 38,629,528,603.84/204,810.81
  6. Step 6: Final answer
    x = 188,610.79

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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.