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Finding the Fourth Proportional to 487,729.12, 673,296.32 and 366,916.51

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Solution

The fourth proportional to 487,729.12, 673,296.32 and 366,916.51 is: 506,517.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,729.12 : 673,296.32 = 366,916.51 : x
  2. Step 2: Convert to fraction form
    487,729.12/673,296.32 = 366,916.51/x
  3. Step 3: Cross multiply
    487,729.12x = 673,296.32 × 366,916.51
  4. Step 4: Simplify right side
    487,729.12x = 247,043,535,930.24
  5. Step 5: Solve for x
    x = 247,043,535,930.24/487,729.12
  6. Step 6: Final answer
    x = 506,517.91

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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.