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Finding the Fourth Proportional to 572,506.44, 790,022.32 and 317,857.56

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Solution

The fourth proportional to 572,506.44, 790,022.32 and 317,857.56 is: 438,623.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,506.44 : 790,022.32 = 317,857.56 : x
  2. Step 2: Convert to fraction form
    572,506.44/790,022.32 = 317,857.56/x
  3. Step 3: Cross multiply
    572,506.44x = 790,022.32 × 317,857.56
  4. Step 4: Simplify right side
    572,506.44x = 251,114,566,980.74
  5. Step 5: Solve for x
    x = 251,114,566,980.74/572,506.44
  6. Step 6: Final answer
    x = 438,623.13

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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.