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Finding the Fourth Proportional to 572,559.60, 790,057.88 and 317,861.58

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Solution

The fourth proportional to 572,559.60, 790,057.88 and 317,861.58 is: 438,607.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,559.60 : 790,057.88 = 317,861.58 : x
  2. Step 2: Convert to fraction form
    572,559.60/790,057.88 = 317,861.58/x
  3. Step 3: Cross multiply
    572,559.60x = 790,057.88 × 317,861.58
  4. Step 4: Simplify right side
    572,559.60x = 251,129,046,028.25
  5. Step 5: Solve for x
    x = 251,129,046,028.25/572,559.60
  6. Step 6: Final answer
    x = 438,607.69

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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.