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Finding the Fourth Proportional to 669,603.11, 923,908.51 and 397,762.65

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Solution

The fourth proportional to 669,603.11, 923,908.51 and 397,762.65 is: 548,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,603.11 : 923,908.51 = 397,762.65 : x
  2. Step 2: Convert to fraction form
    669,603.11/923,908.51 = 397,762.65/x
  3. Step 3: Cross multiply
    669,603.11x = 923,908.51 × 397,762.65
  4. Step 4: Simplify right side
    669,603.11x = 367,496,297,792.36
  5. Step 5: Solve for x
    x = 367,496,297,792.36/669,603.11
  6. Step 6: Final answer
    x = 548,827.05

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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.