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Finding the Fourth Proportional to 356,879.72, 535,150.14 and 207,165.92

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Solution

The fourth proportional to 356,879.72, 535,150.14 and 207,165.92 is: 310,650.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,879.72 : 535,150.14 = 207,165.92 : x
  2. Step 2: Convert to fraction form
    356,879.72/535,150.14 = 207,165.92/x
  3. Step 3: Cross multiply
    356,879.72x = 535,150.14 × 207,165.92
  4. Step 4: Simplify right side
    356,879.72x = 110,864,871,091.23
  5. Step 5: Solve for x
    x = 110,864,871,091.23/356,879.72
  6. Step 6: Final answer
    x = 310,650.52

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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.