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Finding the Fourth Proportional to 219,045.90, 328,568.85 and 149,061.90

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Solution

The fourth proportional to 219,045.90, 328,568.85 and 149,061.90 is: 223,592.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,045.90 : 328,568.85 = 149,061.90 : x
  2. Step 2: Convert to fraction form
    219,045.90/328,568.85 = 149,061.90/x
  3. Step 3: Cross multiply
    219,045.90x = 328,568.85 × 149,061.90
  4. Step 4: Simplify right side
    219,045.90x = 48,977,097,061.82
  5. Step 5: Solve for x
    x = 48,977,097,061.82/219,045.90
  6. Step 6: Final answer
    x = 223,592.85

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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.