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Finding the Fourth Proportional to 647,786.06, 893,940.45 and 357,412.58

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Solution

The fourth proportional to 647,786.06, 893,940.45 and 357,412.58 is: 493,226.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,786.06 : 893,940.45 = 357,412.58 : x
  2. Step 2: Convert to fraction form
    647,786.06/893,940.45 = 357,412.58/x
  3. Step 3: Cross multiply
    647,786.06x = 893,940.45 × 357,412.58
  4. Step 4: Simplify right side
    647,786.06x = 319,505,562,600.86
  5. Step 5: Solve for x
    x = 319,505,562,600.86/647,786.06
  6. Step 6: Final answer
    x = 493,226.98

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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.