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Finding the Fourth Proportional to 669,476.56, 923,471.94 and 397,365.16

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Solution

The fourth proportional to 669,476.56, 923,471.94 and 397,365.16 is: 548,123.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,476.56 : 923,471.94 = 397,365.16 : x
  2. Step 2: Convert to fraction form
    669,476.56/923,471.94 = 397,365.16/x
  3. Step 3: Cross multiply
    669,476.56x = 923,471.94 × 397,365.16
  4. Step 4: Simplify right side
    669,476.56x = 366,955,575,193.61
  5. Step 5: Solve for x
    x = 366,955,575,193.61/669,476.56
  6. Step 6: Final answer
    x = 548,123.11

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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.