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Finding the Fourth Proportional to 447,787.40, 627,731.80 and 447,787.40

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Solution

The fourth proportional to 447,787.40, 627,731.80 and 447,787.40 is: 627,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,787.40 : 627,731.80 = 447,787.40 : x
  2. Step 2: Convert to fraction form
    447,787.40/627,731.80 = 447,787.40/x
  3. Step 3: Cross multiply
    447,787.40x = 627,731.80 × 447,787.40
  4. Step 4: Simplify right side
    447,787.40x = 281,090,390,619.32
  5. Step 5: Solve for x
    x = 281,090,390,619.32/447,787.40
  6. Step 6: Final answer
    x = 627,731.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.