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Finding the Fourth Proportional to 448,216.90, 629,078.30 and 448,216.90

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Solution

The fourth proportional to 448,216.90, 629,078.30 and 448,216.90 is: 629,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,216.90 : 629,078.30 = 448,216.90 : x
  2. Step 2: Convert to fraction form
    448,216.90/629,078.30 = 448,216.90/x
  3. Step 3: Cross multiply
    448,216.90x = 629,078.30 × 448,216.90
  4. Step 4: Simplify right side
    448,216.90x = 281,963,525,483.27
  5. Step 5: Solve for x
    x = 281,963,525,483.27/448,216.90
  6. Step 6: Final answer
    x = 629,078.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.