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Finding the Fourth Proportional to 615,994.88, 850,070.40 and 347,720.96

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Solution

The fourth proportional to 615,994.88, 850,070.40 and 347,720.96 is: 479,853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,994.88 : 850,070.40 = 347,720.96 : x
  2. Step 2: Convert to fraction form
    615,994.88/850,070.40 = 347,720.96/x
  3. Step 3: Cross multiply
    615,994.88x = 850,070.40 × 347,720.96
  4. Step 4: Simplify right side
    615,994.88x = 295,587,295,555.58
  5. Step 5: Solve for x
    x = 295,587,295,555.58/615,994.88
  6. Step 6: Final answer
    x = 479,853.49

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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.