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Finding the Fourth Proportional to 711,996.45, 982,553.45 and 389,703.72

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Solution

The fourth proportional to 711,996.45, 982,553.45 and 389,703.72 is: 537,790.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,996.45 : 982,553.45 = 389,703.72 : x
  2. Step 2: Convert to fraction form
    711,996.45/982,553.45 = 389,703.72/x
  3. Step 3: Cross multiply
    711,996.45x = 982,553.45 × 389,703.72
  4. Step 4: Simplify right side
    711,996.45x = 382,904,736,299.89
  5. Step 5: Solve for x
    x = 382,904,736,299.89/711,996.45
  6. Step 6: Final answer
    x = 537,790.24

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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.