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Finding the Fourth Proportional to 711,651.88, 982,104.10 and 389,361.98

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Solution

The fourth proportional to 711,651.88, 982,104.10 and 389,361.98 is: 537,332.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,651.88 : 982,104.10 = 389,361.98 : x
  2. Step 2: Convert to fraction form
    711,651.88/982,104.10 = 389,361.98/x
  3. Step 3: Cross multiply
    711,651.88x = 982,104.10 × 389,361.98
  4. Step 4: Simplify right side
    711,651.88x = 382,393,996,942.12
  5. Step 5: Solve for x
    x = 382,393,996,942.12/711,651.88
  6. Step 6: Final answer
    x = 537,332.94

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Double scale
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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.