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Finding the Fourth Proportional to 347,507, 479,556.42 and 196,604

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Solution

The fourth proportional to 347,507, 479,556.42 and 196,604 is: 271,311.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,507 : 479,556.42 = 196,604 : x
  2. Step 2: Convert to fraction form
    347,507/479,556.42 = 196,604/x
  3. Step 3: Cross multiply
    347,507x = 479,556.42 × 196,604
  4. Step 4: Simplify right side
    347,507x = 94,282,710,397.68
  5. Step 5: Solve for x
    x = 94,282,710,397.68/347,507
  6. Step 6: Final answer
    x = 271,311.69

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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.