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Finding the Fourth Proportional to 572,634.96, 790,231.92 and 317,987.04

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Solution

The fourth proportional to 572,634.96, 790,231.92 and 317,987.04 is: 438,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,634.96 : 790,231.92 = 317,987.04 : x
  2. Step 2: Convert to fraction form
    572,634.96/790,231.92 = 317,987.04/x
  3. Step 3: Cross multiply
    572,634.96x = 790,231.92 × 317,987.04
  4. Step 4: Simplify right side
    572,634.96x = 251,283,509,154.32
  5. Step 5: Solve for x
    x = 251,283,509,154.32/572,634.96
  6. Step 6: Final answer
    x = 438,819.71

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1.5x scale

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.