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Finding the Fourth Proportional to 648,863.72, 888,928.44 and 624,605.12

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Solution

The fourth proportional to 648,863.72, 888,928.44 and 624,605.12 is: 855,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,863.72 : 888,928.44 = 624,605.12 : x
  2. Step 2: Convert to fraction form
    648,863.72/888,928.44 = 624,605.12/x
  3. Step 3: Cross multiply
    648,863.72x = 888,928.44 × 624,605.12
  4. Step 4: Simplify right side
    648,863.72x = 555,229,254,937.61
  5. Step 5: Solve for x
    x = 555,229,254,937.61/648,863.72
  6. Step 6: Final answer
    x = 855,694.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.