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Finding the Fourth Proportional to 447,907.68, 618,193.20 and 256,984.32

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Solution

The fourth proportional to 447,907.68, 618,193.20 and 256,984.32 is: 354,684.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,907.68 : 618,193.20 = 256,984.32 : x
  2. Step 2: Convert to fraction form
    447,907.68/618,193.20 = 256,984.32/x
  3. Step 3: Cross multiply
    447,907.68x = 618,193.20 × 256,984.32
  4. Step 4: Simplify right side
    447,907.68x = 158,865,959,130.62
  5. Step 5: Solve for x
    x = 158,865,959,130.62/447,907.68
  6. Step 6: Final answer
    x = 354,684.61

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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.