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Finding the Fourth Proportional to 644,783.40, 967,175.10 and 556,209.90

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Solution

The fourth proportional to 644,783.40, 967,175.10 and 556,209.90 is: 834,314.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,783.40 : 967,175.10 = 556,209.90 : x
  2. Step 2: Convert to fraction form
    644,783.40/967,175.10 = 556,209.90/x
  3. Step 3: Cross multiply
    644,783.40x = 967,175.10 × 556,209.90
  4. Step 4: Simplify right side
    644,783.40x = 537,952,365,653.49
  5. Step 5: Solve for x
    x = 537,952,365,653.49/644,783.40
  6. Step 6: Final answer
    x = 834,314.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.