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Finding the Fourth Proportional to 423,839.12, 584,638.56 and 251,640.27

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Solution

The fourth proportional to 423,839.12, 584,638.56 and 251,640.27 is: 347,109.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,839.12 : 584,638.56 = 251,640.27 : x
  2. Step 2: Convert to fraction form
    423,839.12/584,638.56 = 251,640.27/x
  3. Step 3: Cross multiply
    423,839.12x = 584,638.56 × 251,640.27
  4. Step 4: Simplify right side
    423,839.12x = 147,118,605,090.81
  5. Step 5: Solve for x
    x = 147,118,605,090.81/423,839.12
  6. Step 6: Final answer
    x = 347,109.55

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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.