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Finding the Fourth Proportional to 619,184.45, 853,683.50 and 401,007.61

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Solution

The fourth proportional to 619,184.45, 853,683.50 and 401,007.61 is: 552,878.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,184.45 : 853,683.50 = 401,007.61 : x
  2. Step 2: Convert to fraction form
    619,184.45/853,683.50 = 401,007.61/x
  3. Step 3: Cross multiply
    619,184.45x = 853,683.50 × 401,007.61
  4. Step 4: Simplify right side
    619,184.45x = 342,333,582,101.06
  5. Step 5: Solve for x
    x = 342,333,582,101.06/619,184.45
  6. Step 6: Final answer
    x = 552,878.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.