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Finding the Fourth Proportional to 216,869.64, 325,317.22 and 83,750.60

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Solution

The fourth proportional to 216,869.64, 325,317.22 and 83,750.60 is: 125,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,869.64 : 325,317.22 = 83,750.60 : x
  2. Step 2: Convert to fraction form
    216,869.64/325,317.22 = 83,750.60/x
  3. Step 3: Cross multiply
    216,869.64x = 325,317.22 × 83,750.60
  4. Step 4: Simplify right side
    216,869.64x = 27,245,510,738.75
  5. Step 5: Solve for x
    x = 27,245,510,738.75/216,869.64
  6. Step 6: Final answer
    x = 125,630.82

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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.