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Finding the Fourth Proportional to 588.54, 812.56 and 402.34

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Solution

The fourth proportional to 588.54, 812.56 and 402.34 is: 555.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.54 : 812.56 = 402.34 : x
  2. Step 2: Convert to fraction form
    588.54/812.56 = 402.34/x
  3. Step 3: Cross multiply
    588.54x = 812.56 × 402.34
  4. Step 4: Simplify right side
    588.54x = 326,925.39
  5. Step 5: Solve for x
    x = 326,925.39/588.54
  6. Step 6: Final answer
    x = 555.49

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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.