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Finding the Fourth Proportional to 464,084.88, 696,127.88 and 127,128.43

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Solution

The fourth proportional to 464,084.88, 696,127.88 and 127,128.43 is: 190,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,084.88 : 696,127.88 = 127,128.43 : x
  2. Step 2: Convert to fraction form
    464,084.88/696,127.88 = 127,128.43/x
  3. Step 3: Cross multiply
    464,084.88x = 696,127.88 × 127,128.43
  4. Step 4: Simplify right side
    464,084.88x = 88,497,644,463.63
  5. Step 5: Solve for x
    x = 88,497,644,463.63/464,084.88
  6. Step 6: Final answer
    x = 190,692.80

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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.