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Finding the Fourth Proportional to 582,790.34, 804,272.56 and 321,156.74

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Solution

The fourth proportional to 582,790.34, 804,272.56 and 321,156.74 is: 443,208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,790.34 : 804,272.56 = 321,156.74 : x
  2. Step 2: Convert to fraction form
    582,790.34/804,272.56 = 321,156.74/x
  3. Step 3: Cross multiply
    582,790.34x = 804,272.56 × 321,156.74
  4. Step 4: Simplify right side
    582,790.34x = 258,297,553,441.05
  5. Step 5: Solve for x
    x = 258,297,553,441.05/582,790.34
  6. Step 6: Final answer
    x = 443,208.36

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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.