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Finding the Fourth Proportional to 316,986.71, 437,486.45 and 196,166.90

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Solution

The fourth proportional to 316,986.71, 437,486.45 and 196,166.90 is: 270,738.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,986.71 : 437,486.45 = 196,166.90 : x
  2. Step 2: Convert to fraction form
    316,986.71/437,486.45 = 196,166.90/x
  3. Step 3: Cross multiply
    316,986.71x = 437,486.45 × 196,166.90
  4. Step 4: Simplify right side
    316,986.71x = 85,820,357,520.24
  5. Step 5: Solve for x
    x = 85,820,357,520.24/316,986.71
  6. Step 6: Final answer
    x = 270,738.03

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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.