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Finding the Fourth Proportional to 647,761.32, 893,232.36 and 557,423.64

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Solution

The fourth proportional to 647,761.32, 893,232.36 and 557,423.64 is: 768,660.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,761.32 : 893,232.36 = 557,423.64 : x
  2. Step 2: Convert to fraction form
    647,761.32/893,232.36 = 557,423.64/x
  3. Step 3: Cross multiply
    647,761.32x = 893,232.36 × 557,423.64
  4. Step 4: Simplify right side
    647,761.32x = 497,908,833,476.99
  5. Step 5: Solve for x
    x = 497,908,833,476.99/647,761.32
  6. Step 6: Final answer
    x = 768,660.95

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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.