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Finding the Fourth Proportional to 447,376.88, 617,405.64 and 256,422.08

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Solution

The fourth proportional to 447,376.88, 617,405.64 and 256,422.08 is: 353,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,376.88 : 617,405.64 = 256,422.08 : x
  2. Step 2: Convert to fraction form
    447,376.88/617,405.64 = 256,422.08/x
  3. Step 3: Cross multiply
    447,376.88x = 617,405.64 × 256,422.08
  4. Step 4: Simplify right side
    447,376.88x = 158,316,438,412.53
  5. Step 5: Solve for x
    x = 158,316,438,412.53/447,376.88
  6. Step 6: Final answer
    x = 353,877.11

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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.