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Finding the Fourth Proportional to 572,489.68, 790,004.92 and 317,824.47

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Solution

The fourth proportional to 572,489.68, 790,004.92 and 317,824.47 is: 438,580.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,489.68 : 790,004.92 = 317,824.47 : x
  2. Step 2: Convert to fraction form
    572,489.68/790,004.92 = 317,824.47/x
  3. Step 3: Cross multiply
    572,489.68x = 790,004.92 × 317,824.47
  4. Step 4: Simplify right side
    572,489.68x = 251,082,894,996.39
  5. Step 5: Solve for x
    x = 251,082,894,996.39/572,489.68
  6. Step 6: Final answer
    x = 438,580.65

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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.