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Finding the Fourth Proportional to 647,816.68, 893,967.78 and 361,330.30

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Solution

The fourth proportional to 647,816.68, 893,967.78 and 361,330.30 is: 498,625.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,816.68 : 893,967.78 = 361,330.30 : x
  2. Step 2: Convert to fraction form
    647,816.68/893,967.78 = 361,330.30/x
  3. Step 3: Cross multiply
    647,816.68x = 893,967.78 × 361,330.30
  4. Step 4: Simplify right side
    647,816.68x = 323,017,646,137.73
  5. Step 5: Solve for x
    x = 323,017,646,137.73/647,816.68
  6. Step 6: Final answer
    x = 498,625.08

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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.