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Finding the Fourth Proportional to 617,139.80, 925,528.26 and 262,151

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Solution

The fourth proportional to 617,139.80, 925,528.26 and 262,151 is: 393,149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,139.80 : 925,528.26 = 262,151 : x
  2. Step 2: Convert to fraction form
    617,139.80/925,528.26 = 262,151/x
  3. Step 3: Cross multiply
    617,139.80x = 925,528.26 × 262,151
  4. Step 4: Simplify right side
    617,139.80x = 242,628,158,887.26
  5. Step 5: Solve for x
    x = 242,628,158,887.26/617,139.80
  6. Step 6: Final answer
    x = 393,149.43

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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.