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Finding the Fourth Proportional to 404,715.20, 607,072.20 and 120,404.48

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Solution

The fourth proportional to 404,715.20, 607,072.20 and 120,404.48 is: 180,606.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,715.20 : 607,072.20 = 120,404.48 : x
  2. Step 2: Convert to fraction form
    404,715.20/607,072.20 = 120,404.48/x
  3. Step 3: Cross multiply
    404,715.20x = 607,072.20 × 120,404.48
  4. Step 4: Simplify right side
    404,715.20x = 73,094,212,563.46
  5. Step 5: Solve for x
    x = 73,094,212,563.46/404,715.20
  6. Step 6: Final answer
    x = 180,606.54

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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.