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Finding the Fourth Proportional to 447,890.68, 618,169.62 and 256,967.20

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Solution

The fourth proportional to 447,890.68, 618,169.62 and 256,967.20 is: 354,660.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,890.68 : 618,169.62 = 256,967.20 : x
  2. Step 2: Convert to fraction form
    447,890.68/618,169.62 = 256,967.20/x
  3. Step 3: Cross multiply
    447,890.68x = 618,169.62 × 256,967.20
  4. Step 4: Simplify right side
    447,890.68x = 158,849,316,376.46
  5. Step 5: Solve for x
    x = 158,849,316,376.46/447,890.68
  6. Step 6: Final answer
    x = 354,660.91

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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.