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Finding the Fourth Proportional to 890,995.80, 1,336,493.70 and 654,799.80

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Solution

The fourth proportional to 890,995.80, 1,336,493.70 and 654,799.80 is: 982,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,995.80 : 1,336,493.70 = 654,799.80 : x
  2. Step 2: Convert to fraction form
    890,995.80/1,336,493.70 = 654,799.80/x
  3. Step 3: Cross multiply
    890,995.80x = 1,336,493.70 × 654,799.80
  4. Step 4: Simplify right side
    890,995.80x = 875,135,807,461.26
  5. Step 5: Solve for x
    x = 875,135,807,461.26/890,995.80
  6. Step 6: Final answer
    x = 982,199.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.