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Finding the Fourth Proportional to 471,790.36, 651,085.86 and 256,939.48

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Solution

The fourth proportional to 471,790.36, 651,085.86 and 256,939.48 is: 354,584.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,790.36 : 651,085.86 = 256,939.48 : x
  2. Step 2: Convert to fraction form
    471,790.36/651,085.86 = 256,939.48/x
  3. Step 3: Cross multiply
    471,790.36x = 651,085.86 × 256,939.48
  4. Step 4: Simplify right side
    471,790.36x = 167,289,662,303.75
  5. Step 5: Solve for x
    x = 167,289,662,303.75/471,790.36
  6. Step 6: Final answer
    x = 354,584.74

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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.