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Finding the Fourth Proportional to 647,805.84, 893,969.58 and 357,435.49

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Solution

The fourth proportional to 647,805.84, 893,969.58 and 357,435.49 is: 493,259.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,805.84 : 893,969.58 = 357,435.49 : x
  2. Step 2: Convert to fraction form
    647,805.84/893,969.58 = 357,435.49/x
  3. Step 3: Cross multiply
    647,805.84x = 893,969.58 × 357,435.49
  4. Step 4: Simplify right side
    647,805.84x = 319,536,454,872.39
  5. Step 5: Solve for x
    x = 319,536,454,872.39/647,805.84
  6. Step 6: Final answer
    x = 493,259.61

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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.