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Finding the Fourth Proportional to 909,357.15, 1,254,912.95 and 522,198

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Solution

The fourth proportional to 909,357.15, 1,254,912.95 and 522,198 is: 720,633.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,357.15 : 1,254,912.95 = 522,198 : x
  2. Step 2: Convert to fraction form
    909,357.15/1,254,912.95 = 522,198/x
  3. Step 3: Cross multiply
    909,357.15x = 1,254,912.95 × 522,198
  4. Step 4: Simplify right side
    909,357.15x = 655,313,030,053.11
  5. Step 5: Solve for x
    x = 655,313,030,053.11/909,357.15
  6. Step 6: Final answer
    x = 720,633.28

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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.