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Finding the Fourth Proportional to 355,178.71, 490,153.85 and 194,044.20

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Solution

The fourth proportional to 355,178.71, 490,153.85 and 194,044.20 is: 267,784.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,178.71 : 490,153.85 = 194,044.20 : x
  2. Step 2: Convert to fraction form
    355,178.71/490,153.85 = 194,044.20/x
  3. Step 3: Cross multiply
    355,178.71x = 490,153.85 × 194,044.20
  4. Step 4: Simplify right side
    355,178.71x = 95,111,511,700.17
  5. Step 5: Solve for x
    x = 95,111,511,700.17/355,178.71
  6. Step 6: Final answer
    x = 267,784.95

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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.