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Finding the Fourth Proportional to 447,822.72, 618,053.76 and 256,798.80

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Solution

The fourth proportional to 447,822.72, 618,053.76 and 256,798.80 is: 354,415.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,822.72 : 618,053.76 = 256,798.80 : x
  2. Step 2: Convert to fraction form
    447,822.72/618,053.76 = 256,798.80/x
  3. Step 3: Cross multiply
    447,822.72x = 618,053.76 × 256,798.80
  4. Step 4: Simplify right side
    447,822.72x = 158,715,463,903.49
  5. Step 5: Solve for x
    x = 158,715,463,903.49/447,822.72
  6. Step 6: Final answer
    x = 354,415.84

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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.