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Finding the Fourth Proportional to 572,564.60, 790,064.80 and 317,866.60

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Solution

The fourth proportional to 572,564.60, 790,064.80 and 317,866.60 is: 438,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,564.60 : 790,064.80 = 317,866.60 : x
  2. Step 2: Convert to fraction form
    572,564.60/790,064.80 = 317,866.60/x
  3. Step 3: Cross multiply
    572,564.60x = 790,064.80 × 317,866.60
  4. Step 4: Simplify right side
    572,564.60x = 251,135,211,755.68
  5. Step 5: Solve for x
    x = 251,135,211,755.68/572,564.60
  6. Step 6: Final answer
    x = 438,614.63

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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.