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Finding the Fourth Proportional to 443,996.91, 612,306.88 and 290,979.35

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Solution

The fourth proportional to 443,996.91, 612,306.88 and 290,979.35 is: 401,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,996.91 : 612,306.88 = 290,979.35 : x
  2. Step 2: Convert to fraction form
    443,996.91/612,306.88 = 290,979.35/x
  3. Step 3: Cross multiply
    443,996.91x = 612,306.88 × 290,979.35
  4. Step 4: Simplify right side
    443,996.91x = 178,168,656,450.10
  5. Step 5: Solve for x
    x = 178,168,656,450.10/443,996.91
  6. Step 6: Final answer
    x = 401,283.55

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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.