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Finding the Fourth Proportional to 665,333.85, 996,852.60 and 309,618.30

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Solution

The fourth proportional to 665,333.85, 996,852.60 and 309,618.30 is: 463,893.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,333.85 : 996,852.60 = 309,618.30 : x
  2. Step 2: Convert to fraction form
    665,333.85/996,852.60 = 309,618.30/x
  3. Step 3: Cross multiply
    665,333.85x = 996,852.60 × 309,618.30
  4. Step 4: Simplify right side
    665,333.85x = 308,643,807,362.58
  5. Step 5: Solve for x
    x = 308,643,807,362.58/665,333.85
  6. Step 6: Final answer
    x = 463,893.14

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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.