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Finding the Fourth Proportional to 447,887.40, 618,073.92 and 256,888.59

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Solution

The fourth proportional to 447,887.40, 618,073.92 and 256,888.59 is: 354,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,887.40 : 618,073.92 = 256,888.59 : x
  2. Step 2: Convert to fraction form
    447,887.40/618,073.92 = 256,888.59/x
  3. Step 3: Cross multiply
    447,887.40x = 618,073.92 × 256,888.59
  4. Step 4: Simplify right side
    447,887.40x = 158,776,137,824.57
  5. Step 5: Solve for x
    x = 158,776,137,824.57/447,887.40
  6. Step 6: Final answer
    x = 354,500.12

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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.