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Finding the Fourth Proportional to 377,816.86, 521,387.85 and 208,051.66

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Solution

The fourth proportional to 377,816.86, 521,387.85 and 208,051.66 is: 287,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,816.86 : 521,387.85 = 208,051.66 : x
  2. Step 2: Convert to fraction form
    377,816.86/521,387.85 = 208,051.66/x
  3. Step 3: Cross multiply
    377,816.86x = 521,387.85 × 208,051.66
  4. Step 4: Simplify right side
    377,816.86x = 108,475,607,696.33
  5. Step 5: Solve for x
    x = 108,475,607,696.33/377,816.86
  6. Step 6: Final answer
    x = 287,111.61

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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.