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Finding the Fourth Proportional to 639,354.53, 882,307.44 and 352,872.56

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Solution

The fourth proportional to 639,354.53, 882,307.44 and 352,872.56 is: 486,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,354.53 : 882,307.44 = 352,872.56 : x
  2. Step 2: Convert to fraction form
    639,354.53/882,307.44 = 352,872.56/x
  3. Step 3: Cross multiply
    639,354.53x = 882,307.44 × 352,872.56
  4. Step 4: Simplify right side
    639,354.53x = 311,342,087,265.62
  5. Step 5: Solve for x
    x = 311,342,087,265.62/639,354.53
  6. Step 6: Final answer
    x = 486,963.13

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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.