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Finding the Fourth Proportional to 639,522.99, 882,544.55 and 353,045.43

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Solution

The fourth proportional to 639,522.99, 882,544.55 and 353,045.43 is: 487,204.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,522.99 : 882,544.55 = 353,045.43 : x
  2. Step 2: Convert to fraction form
    639,522.99/882,544.55 = 353,045.43/x
  3. Step 3: Cross multiply
    639,522.99x = 882,544.55 × 353,045.43
  4. Step 4: Simplify right side
    639,522.99x = 311,578,318,383.68
  5. Step 5: Solve for x
    x = 311,578,318,383.68/639,522.99
  6. Step 6: Final answer
    x = 487,204.25

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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.