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Finding the Fourth Proportional to 551,916.40, 825,906.30 and 382,642.60

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Solution

The fourth proportional to 551,916.40, 825,906.30 and 382,642.60 is: 572,599.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,916.40 : 825,906.30 = 382,642.60 : x
  2. Step 2: Convert to fraction form
    551,916.40/825,906.30 = 382,642.60/x
  3. Step 3: Cross multiply
    551,916.40x = 825,906.30 × 382,642.60
  4. Step 4: Simplify right side
    551,916.40x = 316,026,933,988.38
  5. Step 5: Solve for x
    x = 316,026,933,988.38/551,916.40
  6. Step 6: Final answer
    x = 572,599.28

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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.