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Finding the Fourth Proportional to 571,798.47, 856,615.08 and 381,685.59

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Solution

The fourth proportional to 571,798.47, 856,615.08 and 381,685.59 is: 571,805.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,798.47 : 856,615.08 = 381,685.59 : x
  2. Step 2: Convert to fraction form
    571,798.47/856,615.08 = 381,685.59/x
  3. Step 3: Cross multiply
    571,798.47x = 856,615.08 × 381,685.59
  4. Step 4: Simplify right side
    571,798.47x = 326,957,632,212.70
  5. Step 5: Solve for x
    x = 326,957,632,212.70/571,798.47
  6. Step 6: Final answer
    x = 571,805.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.