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Finding the Fourth Proportional to 572,528.22, 790,073.91 and 317,872.86

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Solution

The fourth proportional to 572,528.22, 790,073.91 and 317,872.86 is: 438,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,528.22 : 790,073.91 = 317,872.86 : x
  2. Step 2: Convert to fraction form
    572,528.22/790,073.91 = 317,872.86/x
  3. Step 3: Cross multiply
    572,528.22x = 790,073.91 × 317,872.86
  4. Step 4: Simplify right side
    572,528.22x = 251,143,053,383.08
  5. Step 5: Solve for x
    x = 251,143,053,383.08/572,528.22
  6. Step 6: Final answer
    x = 438,656.20

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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.