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Finding the Fourth Proportional to 571,664.79, 786,917.43 and 494,105.13

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Solution

The fourth proportional to 571,664.79, 786,917.43 and 494,105.13 is: 680,153.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,664.79 : 786,917.43 = 494,105.13 : x
  2. Step 2: Convert to fraction form
    571,664.79/786,917.43 = 494,105.13/x
  3. Step 3: Cross multiply
    571,664.79x = 786,917.43 × 494,105.13
  4. Step 4: Simplify right side
    571,664.79x = 388,819,939,049.42
  5. Step 5: Solve for x
    x = 388,819,939,049.42/571,664.79
  6. Step 6: Final answer
    x = 680,153.73

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Double scale
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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.