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Finding the Fourth Proportional to 407,787.90, 610,515.45 and 407,787.90

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Solution

The fourth proportional to 407,787.90, 610,515.45 and 407,787.90 is: 610,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,787.90 : 610,515.45 = 407,787.90 : x
  2. Step 2: Convert to fraction form
    407,787.90/610,515.45 = 407,787.90/x
  3. Step 3: Cross multiply
    407,787.90x = 610,515.45 × 407,787.90
  4. Step 4: Simplify right side
    407,787.90x = 248,960,813,273.06
  5. Step 5: Solve for x
    x = 248,960,813,273.06/407,787.90
  6. Step 6: Final answer
    x = 610,515.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.