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Finding the Fourth Proportional to 664,833.51, 923,664.09 and 656,861.88

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Solution

The fourth proportional to 664,833.51, 923,664.09 and 656,861.88 is: 912,588.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,833.51 : 923,664.09 = 656,861.88 : x
  2. Step 2: Convert to fraction form
    664,833.51/923,664.09 = 656,861.88/x
  3. Step 3: Cross multiply
    664,833.51x = 923,664.09 × 656,861.88
  4. Step 4: Simplify right side
    664,833.51x = 606,719,730,645.89
  5. Step 5: Solve for x
    x = 606,719,730,645.89/664,833.51
  6. Step 6: Final answer
    x = 912,588.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.