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Finding the Fourth Proportional to 763,663.78, 1,053,794.19 and 441,394.66

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Solution

The fourth proportional to 763,663.78, 1,053,794.19 and 441,394.66 is: 609,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,663.78 : 1,053,794.19 = 441,394.66 : x
  2. Step 2: Convert to fraction form
    763,663.78/1,053,794.19 = 441,394.66/x
  3. Step 3: Cross multiply
    763,663.78x = 1,053,794.19 × 441,394.66
  4. Step 4: Simplify right side
    763,663.78x = 465,139,128,205.03
  5. Step 5: Solve for x
    x = 465,139,128,205.03/763,663.78
  6. Step 6: Final answer
    x = 609,088.90

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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.