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Finding the Fourth Proportional to 664,534.40, 996,954.24 and 191,223.68

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Solution

The fourth proportional to 664,534.40, 996,954.24 and 191,223.68 is: 286,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,534.40 : 996,954.24 = 191,223.68 : x
  2. Step 2: Convert to fraction form
    664,534.40/996,954.24 = 191,223.68/x
  3. Step 3: Cross multiply
    664,534.40x = 996,954.24 × 191,223.68
  4. Step 4: Simplify right side
    664,534.40x = 190,641,258,564.40
  5. Step 5: Solve for x
    x = 190,641,258,564.40/664,534.40
  6. Step 6: Final answer
    x = 286,879.44

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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.