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Finding the Fourth Proportional to 639,503.47, 882,514.94 and 353,023.75

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Solution

The fourth proportional to 639,503.47, 882,514.94 and 353,023.75 is: 487,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,503.47 : 882,514.94 = 353,023.75 : x
  2. Step 2: Convert to fraction form
    639,503.47/882,514.94 = 353,023.75/x
  3. Step 3: Cross multiply
    639,503.47x = 882,514.94 × 353,023.75
  4. Step 4: Simplify right side
    639,503.47x = 311,548,733,549.83
  5. Step 5: Solve for x
    x = 311,548,733,549.83/639,503.47
  6. Step 6: Final answer
    x = 487,172.86

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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.