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Finding the Fourth Proportional to 1,292,826.07, 1,939,239.10 and 661,395.43

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Solution

The fourth proportional to 1,292,826.07, 1,939,239.10 and 661,395.43 is: 992,093.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,826.07 : 1,939,239.10 = 661,395.43 : x
  2. Step 2: Convert to fraction form
    1,292,826.07/1,939,239.10 = 661,395.43/x
  3. Step 3: Cross multiply
    1,292,826.07x = 1,939,239.10 × 661,395.43
  4. Step 4: Simplify right side
    1,292,826.07x = 1,282,603,868,721.12
  5. Step 5: Solve for x
    x = 1,282,603,868,721.12/1,292,826.07
  6. Step 6: Final answer
    x = 992,093.14

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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.