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Finding the Fourth Proportional to 216,715.72, 299,092.50 and 121,246.60

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Solution

The fourth proportional to 216,715.72, 299,092.50 and 121,246.60 is: 167,334.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,715.72 : 299,092.50 = 121,246.60 : x
  2. Step 2: Convert to fraction form
    216,715.72/299,092.50 = 121,246.60/x
  3. Step 3: Cross multiply
    216,715.72x = 299,092.50 × 121,246.60
  4. Step 4: Simplify right side
    216,715.72x = 36,263,948,710.50
  5. Step 5: Solve for x
    x = 36,263,948,710.50/216,715.72
  6. Step 6: Final answer
    x = 167,334.19

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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.