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Finding the Fourth Proportional to 472,181.76, 651,608.66 and 257,321.77

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Solution

The fourth proportional to 472,181.76, 651,608.66 and 257,321.77 is: 355,102.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,181.76 : 651,608.66 = 257,321.77 : x
  2. Step 2: Convert to fraction form
    472,181.76/651,608.66 = 257,321.77/x
  3. Step 3: Cross multiply
    472,181.76x = 651,608.66 × 257,321.77
  4. Step 4: Simplify right side
    472,181.76x = 167,673,092,752.81
  5. Step 5: Solve for x
    x = 167,673,092,752.81/472,181.76
  6. Step 6: Final answer
    x = 355,102.86

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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.