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Finding the Fourth Proportional to 404,762.80, 607,217.10 and 168,129.40

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Solution

The fourth proportional to 404,762.80, 607,217.10 and 168,129.40 is: 252,224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,762.80 : 607,217.10 = 168,129.40 : x
  2. Step 2: Convert to fraction form
    404,762.80/607,217.10 = 168,129.40/x
  3. Step 3: Cross multiply
    404,762.80x = 607,217.10 × 168,129.40
  4. Step 4: Simplify right side
    404,762.80x = 102,091,046,692.74
  5. Step 5: Solve for x
    x = 102,091,046,692.74/404,762.80
  6. Step 6: Final answer
    x = 252,224.38

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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.