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Finding the Fourth Proportional to 639,503.97, 882,515.64 and 353,024.25

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Solution

The fourth proportional to 639,503.97, 882,515.64 and 353,024.25 is: 487,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,503.97 : 882,515.64 = 353,024.25 : x
  2. Step 2: Convert to fraction form
    639,503.97/882,515.64 = 353,024.25/x
  3. Step 3: Cross multiply
    639,503.97x = 882,515.64 × 353,024.25
  4. Step 4: Simplify right side
    639,503.97x = 311,549,421,924.27
  5. Step 5: Solve for x
    x = 311,549,421,924.27/639,503.97
  6. Step 6: Final answer
    x = 487,173.55

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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.