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Finding the Fourth Proportional to 219,212.73, 328,828.67 and 69,464.06

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Solution

The fourth proportional to 219,212.73, 328,828.67 and 69,464.06 is: 104,199.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,212.73 : 328,828.67 = 69,464.06 : x
  2. Step 2: Convert to fraction form
    219,212.73/328,828.67 = 69,464.06/x
  3. Step 3: Cross multiply
    219,212.73x = 328,828.67 × 69,464.06
  4. Step 4: Simplify right side
    219,212.73x = 22,841,772,471.14
  5. Step 5: Solve for x
    x = 22,841,772,471.14/219,212.73
  6. Step 6: Final answer
    x = 104,199.12

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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.