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Finding the Fourth Proportional to 640,866.27, 961,877.20 and 341,596.11

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Solution

The fourth proportional to 640,866.27, 961,877.20 and 341,596.11 is: 512,702.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,866.27 : 961,877.20 = 341,596.11 : x
  2. Step 2: Convert to fraction form
    640,866.27/961,877.20 = 341,596.11/x
  3. Step 3: Cross multiply
    640,866.27x = 961,877.20 × 341,596.11
  4. Step 4: Simplify right side
    640,866.27x = 328,573,509,817.69
  5. Step 5: Solve for x
    x = 328,573,509,817.69/640,866.27
  6. Step 6: Final answer
    x = 512,702.14

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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.