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Finding the Fourth Proportional to 219,003.62, 328,505.76 and 61,231.95

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Solution

The fourth proportional to 219,003.62, 328,505.76 and 61,231.95 is: 91,848.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,003.62 : 328,505.76 = 61,231.95 : x
  2. Step 2: Convert to fraction form
    219,003.62/328,505.76 = 61,231.95/x
  3. Step 3: Cross multiply
    219,003.62x = 328,505.76 × 61,231.95
  4. Step 4: Simplify right side
    219,003.62x = 20,115,048,271.03
  5. Step 5: Solve for x
    x = 20,115,048,271.03/219,003.62
  6. Step 6: Final answer
    x = 91,848.02

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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.