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Finding the Fourth Proportional to 572,508.94, 790,025.77 and 317,860.06

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Solution

The fourth proportional to 572,508.94, 790,025.77 and 317,860.06 is: 438,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,508.94 : 790,025.77 = 317,860.06 : x
  2. Step 2: Convert to fraction form
    572,508.94/790,025.77 = 317,860.06/x
  3. Step 3: Cross multiply
    572,508.94x = 790,025.77 × 317,860.06
  4. Step 4: Simplify right side
    572,508.94x = 251,117,638,653.75
  5. Step 5: Solve for x
    x = 251,117,638,653.75/572,508.94
  6. Step 6: Final answer
    x = 438,626.58

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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.