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Finding the Fourth Proportional to 623,694.74, 860,327.12 and 393,846.50

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Solution

The fourth proportional to 623,694.74, 860,327.12 and 393,846.50 is: 543,273.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,694.74 : 860,327.12 = 393,846.50 : x
  2. Step 2: Convert to fraction form
    623,694.74/860,327.12 = 393,846.50/x
  3. Step 3: Cross multiply
    623,694.74x = 860,327.12 × 393,846.50
  4. Step 4: Simplify right side
    623,694.74x = 338,836,828,202.51
  5. Step 5: Solve for x
    x = 338,836,828,202.51/623,694.74
  6. Step 6: Final answer
    x = 543,273.51

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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.