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Finding the Fourth Proportional to 351,756.66, 527,640.78 and 99,043.23

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Solution

The fourth proportional to 351,756.66, 527,640.78 and 99,043.23 is: 148,566.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,756.66 : 527,640.78 = 99,043.23 : x
  2. Step 2: Convert to fraction form
    351,756.66/527,640.78 = 99,043.23/x
  3. Step 3: Cross multiply
    351,756.66x = 527,640.78 × 99,043.23
  4. Step 4: Simplify right side
    351,756.66x = 52,259,247,130.92
  5. Step 5: Solve for x
    x = 52,259,247,130.92/351,756.66
  6. Step 6: Final answer
    x = 148,566.48

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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.