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Finding the Fourth Proportional to 961,083, 1,326,392.28 and 553,201.92

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Solution

The fourth proportional to 961,083, 1,326,392.28 and 553,201.92 is: 763,474.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,083 : 1,326,392.28 = 553,201.92 : x
  2. Step 2: Convert to fraction form
    961,083/1,326,392.28 = 553,201.92/x
  3. Step 3: Cross multiply
    961,083x = 1,326,392.28 × 553,201.92
  4. Step 4: Simplify right side
    961,083x = 733,762,755,969.18
  5. Step 5: Solve for x
    x = 733,762,755,969.18/961,083
  6. Step 6: Final answer
    x = 763,474.91

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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.