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Finding the Fourth Proportional to 639,533.97, 882,533.73 and 353,047.92

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Solution

The fourth proportional to 639,533.97, 882,533.73 and 353,047.92 is: 487,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,533.97 : 882,533.73 = 353,047.92 : x
  2. Step 2: Convert to fraction form
    639,533.97/882,533.73 = 353,047.92/x
  3. Step 3: Cross multiply
    639,533.97x = 882,533.73 × 353,047.92
  4. Step 4: Simplify right side
    639,533.97x = 311,576,697,706.34
  5. Step 5: Solve for x
    x = 311,576,697,706.34/639,533.97
  6. Step 6: Final answer
    x = 487,193.35

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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.