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Finding the Fourth Proportional to 438,062.21, 604,531.55 and 254,343.84

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Solution

The fourth proportional to 438,062.21, 604,531.55 and 254,343.84 is: 350,997.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,062.21 : 604,531.55 = 254,343.84 : x
  2. Step 2: Convert to fraction form
    438,062.21/604,531.55 = 254,343.84/x
  3. Step 3: Cross multiply
    438,062.21x = 604,531.55 × 254,343.84
  4. Step 4: Simplify right side
    438,062.21x = 153,758,874,556.43
  5. Step 5: Solve for x
    x = 153,758,874,556.43/438,062.21
  6. Step 6: Final answer
    x = 350,997.81

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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.