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Finding the Fourth Proportional to 666,005.80, 997,040.40 and 441,619.60

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Solution

The fourth proportional to 666,005.80, 997,040.40 and 441,619.60 is: 661,124.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,005.80 : 997,040.40 = 441,619.60 : x
  2. Step 2: Convert to fraction form
    666,005.80/997,040.40 = 441,619.60/x
  3. Step 3: Cross multiply
    666,005.80x = 997,040.40 × 441,619.60
  4. Step 4: Simplify right side
    666,005.80x = 440,312,582,631.84
  5. Step 5: Solve for x
    x = 440,312,582,631.84/666,005.80
  6. Step 6: Final answer
    x = 661,124.25

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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.