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Finding the Fourth Proportional to 219,804.53, 329,703.21 and 70,042.79

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Solution

The fourth proportional to 219,804.53, 329,703.21 and 70,042.79 is: 105,063.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,804.53 : 329,703.21 = 70,042.79 : x
  2. Step 2: Convert to fraction form
    219,804.53/329,703.21 = 70,042.79/x
  3. Step 3: Cross multiply
    219,804.53x = 329,703.21 × 70,042.79
  4. Step 4: Simplify right side
    219,804.53x = 23,093,333,524.61
  5. Step 5: Solve for x
    x = 23,093,333,524.61/219,804.53
  6. Step 6: Final answer
    x = 105,063.05

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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.