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Finding the Fourth Proportional to 572,490.37, 790,005.88 and 317,825.16

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Solution

The fourth proportional to 572,490.37, 790,005.88 and 317,825.16 is: 438,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,490.37 : 790,005.88 = 317,825.16 : x
  2. Step 2: Convert to fraction form
    572,490.37/790,005.88 = 317,825.16/x
  3. Step 3: Cross multiply
    572,490.37x = 790,005.88 × 317,825.16
  4. Step 4: Simplify right side
    572,490.37x = 251,083,740,858.93
  5. Step 5: Solve for x
    x = 251,083,740,858.93/572,490.37
  6. Step 6: Final answer
    x = 438,581.60

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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.