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Finding the Fourth Proportional to 640,770.50, 960,977.82 and 191,384.83

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Solution

The fourth proportional to 640,770.50, 960,977.82 and 191,384.83 is: 287,024.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,770.50 : 960,977.82 = 191,384.83 : x
  2. Step 2: Convert to fraction form
    640,770.50/960,977.82 = 191,384.83/x
  3. Step 3: Cross multiply
    640,770.50x = 960,977.82 × 191,384.83
  4. Step 4: Simplify right side
    640,770.50x = 183,916,573,227.89
  5. Step 5: Solve for x
    x = 183,916,573,227.89/640,770.50
  6. Step 6: Final answer
    x = 287,024.10

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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.