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Finding the Fourth Proportional to 647,763.32, 893,235.12 and 557,425.64

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Solution

The fourth proportional to 647,763.32, 893,235.12 and 557,425.64 is: 768,663.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,763.32 : 893,235.12 = 557,425.64 : x
  2. Step 2: Convert to fraction form
    647,763.32/893,235.12 = 557,425.64/x
  3. Step 3: Cross multiply
    647,763.32x = 893,235.12 × 557,425.64
  4. Step 4: Simplify right side
    647,763.32x = 497,912,158,436.48
  5. Step 5: Solve for x
    x = 497,912,158,436.48/647,763.32
  6. Step 6: Final answer
    x = 768,663.71

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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.