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Finding the Fourth Proportional to 647,783.06, 893,936.31 and 357,409.58

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Solution

The fourth proportional to 647,783.06, 893,936.31 and 357,409.58 is: 493,222.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,783.06 : 893,936.31 = 357,409.58 : x
  2. Step 2: Convert to fraction form
    647,783.06/893,936.31 = 357,409.58/x
  3. Step 3: Cross multiply
    647,783.06x = 893,936.31 × 357,409.58
  4. Step 4: Simplify right side
    647,783.06x = 319,501,401,103.85
  5. Step 5: Solve for x
    x = 319,501,401,103.85/647,783.06
  6. Step 6: Final answer
    x = 493,222.84

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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.