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Finding the Fourth Proportional to 639,504.04, 882,517.76 and 353,023.48

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Solution

The fourth proportional to 639,504.04, 882,517.76 and 353,023.48 is: 487,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,504.04 : 882,517.76 = 353,023.48 : x
  2. Step 2: Convert to fraction form
    639,504.04/882,517.76 = 353,023.48/x
  3. Step 3: Cross multiply
    639,504.04x = 882,517.76 × 353,023.48
  4. Step 4: Simplify right side
    639,504.04x = 311,549,490,797.01
  5. Step 5: Solve for x
    x = 311,549,490,797.01/639,504.04
  6. Step 6: Final answer
    x = 487,173.61

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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.