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Finding the Fourth Proportional to 395,613.51, 545,945.97 and 214,330.04

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Solution

The fourth proportional to 395,613.51, 545,945.97 and 214,330.04 is: 295,775.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,613.51 : 545,945.97 = 214,330.04 : x
  2. Step 2: Convert to fraction form
    395,613.51/545,945.97 = 214,330.04/x
  3. Step 3: Cross multiply
    395,613.51x = 545,945.97 × 214,330.04
  4. Step 4: Simplify right side
    395,613.51x = 117,012,621,587.94
  5. Step 5: Solve for x
    x = 117,012,621,587.94/395,613.51
  6. Step 6: Final answer
    x = 295,775.09

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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.