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Finding the Fourth Proportional to 347,438.68, 479,460.78 and 196,535.68

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Solution

The fourth proportional to 347,438.68, 479,460.78 and 196,535.68 is: 271,216.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,438.68 : 479,460.78 = 196,535.68 : x
  2. Step 2: Convert to fraction form
    347,438.68/479,460.78 = 196,535.68/x
  3. Step 3: Cross multiply
    347,438.68x = 479,460.78 × 196,535.68
  4. Step 4: Simplify right side
    347,438.68x = 94,231,150,430.63
  5. Step 5: Solve for x
    x = 94,231,150,430.63/347,438.68
  6. Step 6: Final answer
    x = 271,216.64

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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.