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Finding the Fourth Proportional to 219,766.74, 329,699.82 and 70,015.56

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Solution

The fourth proportional to 219,766.74, 329,699.82 and 70,015.56 is: 105,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,766.74 : 329,699.82 = 70,015.56 : x
  2. Step 2: Convert to fraction form
    219,766.74/329,699.82 = 70,015.56/x
  3. Step 3: Cross multiply
    219,766.74x = 329,699.82 × 70,015.56
  4. Step 4: Simplify right side
    219,766.74x = 23,084,117,529.20
  5. Step 5: Solve for x
    x = 23,084,117,529.20/219,766.74
  6. Step 6: Final answer
    x = 105,039.18

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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.