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Finding the Fourth Proportional to 661,660.36, 912,623.70 and 457,773.64

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Solution

The fourth proportional to 661,660.36, 912,623.70 and 457,773.64 is: 631,404.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,660.36 : 912,623.70 = 457,773.64 : x
  2. Step 2: Convert to fraction form
    661,660.36/912,623.70 = 457,773.64/x
  3. Step 3: Cross multiply
    661,660.36x = 912,623.70 × 457,773.64
  4. Step 4: Simplify right side
    661,660.36x = 417,775,073,099.27
  5. Step 5: Solve for x
    x = 417,775,073,099.27/661,660.36
  6. Step 6: Final answer
    x = 631,404.11

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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.