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Finding the Fourth Proportional to 640,866.78, 961,877.96 and 341,596.62

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Solution

The fourth proportional to 640,866.78, 961,877.96 and 341,596.62 is: 512,702.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,866.78 : 961,877.96 = 341,596.62 : x
  2. Step 2: Convert to fraction form
    640,866.78/961,877.96 = 341,596.62/x
  3. Step 3: Cross multiply
    640,866.78x = 961,877.96 × 341,596.62
  4. Step 4: Simplify right side
    640,866.78x = 328,574,259,988.50
  5. Step 5: Solve for x
    x = 328,574,259,988.50/640,866.78
  6. Step 6: Final answer
    x = 512,702.91

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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.