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Finding the Fourth Proportional to 647,800.53, 965,052.33 and 618,654.45

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Solution

The fourth proportional to 647,800.53, 965,052.33 and 618,654.45 is: 921,632.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,800.53 : 965,052.33 = 618,654.45 : x
  2. Step 2: Convert to fraction form
    647,800.53/965,052.33 = 618,654.45/x
  3. Step 3: Cross multiply
    647,800.53x = 965,052.33 × 618,654.45
  4. Step 4: Simplify right side
    647,800.53x = 597,033,918,437.37
  5. Step 5: Solve for x
    x = 597,033,918,437.37/647,800.53
  6. Step 6: Final answer
    x = 921,632.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.