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Finding the Fourth Proportional to 219,096.80, 328,620.90 and 61,341.20

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Solution

The fourth proportional to 219,096.80, 328,620.90 and 61,341.20 is: 92,005.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,096.80 : 328,620.90 = 61,341.20 : x
  2. Step 2: Convert to fraction form
    219,096.80/328,620.90 = 61,341.20/x
  3. Step 3: Cross multiply
    219,096.80x = 328,620.90 × 61,341.20
  4. Step 4: Simplify right side
    219,096.80x = 20,158,000,351.08
  5. Step 5: Solve for x
    x = 20,158,000,351.08/219,096.80
  6. Step 6: Final answer
    x = 92,005.00

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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.