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Finding the Fourth Proportional to 216,453.93, 298,705.55 and 120,960.60

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Solution

The fourth proportional to 216,453.93, 298,705.55 and 120,960.60 is: 166,925.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,453.93 : 298,705.55 = 120,960.60 : x
  2. Step 2: Convert to fraction form
    216,453.93/298,705.55 = 120,960.60/x
  3. Step 3: Cross multiply
    216,453.93x = 298,705.55 × 120,960.60
  4. Step 4: Simplify right side
    216,453.93x = 36,131,602,551.33
  5. Step 5: Solve for x
    x = 36,131,602,551.33/216,453.93
  6. Step 6: Final answer
    x = 166,925.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.