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Finding the Fourth Proportional to 998,784, 1,378,346.88 and 606,321.60

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Solution

The fourth proportional to 998,784, 1,378,346.88 and 606,321.60 is: 836,738.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,784 : 1,378,346.88 = 606,321.60 : x
  2. Step 2: Convert to fraction form
    998,784/1,378,346.88 = 606,321.60/x
  3. Step 3: Cross multiply
    998,784x = 1,378,346.88 × 606,321.60
  4. Step 4: Simplify right side
    998,784x = 835,721,485,636.61
  5. Step 5: Solve for x
    x = 835,721,485,636.61/998,784
  6. Step 6: Final answer
    x = 836,738.96

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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.