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Finding the Fourth Proportional to 665,647.40, 998,471.10 and 222,415.40

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Solution

The fourth proportional to 665,647.40, 998,471.10 and 222,415.40 is: 333,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,647.40 : 998,471.10 = 222,415.40 : x
  2. Step 2: Convert to fraction form
    665,647.40/998,471.10 = 222,415.40/x
  3. Step 3: Cross multiply
    665,647.40x = 998,471.10 × 222,415.40
  4. Step 4: Simplify right side
    665,647.40x = 222,075,349,094.94
  5. Step 5: Solve for x
    x = 222,075,349,094.94/665,647.40
  6. Step 6: Final answer
    x = 333,623.10

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Half scale
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Double scale
Find fourth proportional to 665,648.40, 998,472.60 and 222,416.40
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.