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Finding the Fourth Proportional to 647,776.88, 893,933.44 and 361,289.60

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Solution

The fourth proportional to 647,776.88, 893,933.44 and 361,289.60 is: 498,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,776.88 : 893,933.44 = 361,289.60 : x
  2. Step 2: Convert to fraction form
    647,776.88/893,933.44 = 361,289.60/x
  3. Step 3: Cross multiply
    647,776.88x = 893,933.44 × 361,289.60
  4. Step 4: Simplify right side
    647,776.88x = 322,968,854,964.22
  5. Step 5: Solve for x
    x = 322,968,854,964.22/647,776.88
  6. Step 6: Final answer
    x = 498,580.40

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1.5x scale

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.