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Finding the Fourth Proportional to 368,212.89, 508,128.95 and 207,067.89

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Solution

The fourth proportional to 368,212.89, 508,128.95 and 207,067.89 is: 285,750.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,212.89 : 508,128.95 = 207,067.89 : x
  2. Step 2: Convert to fraction form
    368,212.89/508,128.95 = 207,067.89/x
  3. Step 3: Cross multiply
    368,212.89x = 508,128.95 × 207,067.89
  4. Step 4: Simplify right side
    368,212.89x = 105,217,190,782.81
  5. Step 5: Solve for x
    x = 105,217,190,782.81/368,212.89
  6. Step 6: Final answer
    x = 285,750.97

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1.5x scale

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.