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Finding the Fourth Proportional to 572,528.72, 790,074.60 and 317,873.36

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Solution

The fourth proportional to 572,528.72, 790,074.60 and 317,873.36 is: 438,656.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,528.72 : 790,074.60 = 317,873.36 : x
  2. Step 2: Convert to fraction form
    572,528.72/790,074.60 = 317,873.36/x
  3. Step 3: Cross multiply
    572,528.72x = 790,074.60 × 317,873.36
  4. Step 4: Simplify right side
    572,528.72x = 251,143,667,752.66
  5. Step 5: Solve for x
    x = 251,143,667,752.66/572,528.72
  6. Step 6: Final answer
    x = 438,656.89

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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.