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Finding the Fourth Proportional to 325,557.90, 488,878.74 and 219,623.67

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Solution

The fourth proportional to 325,557.90, 488,878.74 and 219,623.67 is: 329,801.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,557.90 : 488,878.74 = 219,623.67 : x
  2. Step 2: Convert to fraction form
    325,557.90/488,878.74 = 219,623.67/x
  3. Step 3: Cross multiply
    325,557.90x = 488,878.74 × 219,623.67
  4. Step 4: Simplify right side
    325,557.90x = 107,369,343,063.78
  5. Step 5: Solve for x
    x = 107,369,343,063.78/325,557.90
  6. Step 6: Final answer
    x = 329,801.07

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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.