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Finding the Fourth Proportional to 711,993.65, 982,553.49 and 389,724.62

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Solution

The fourth proportional to 711,993.65, 982,553.49 and 389,724.62 is: 537,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,993.65 : 982,553.49 = 389,724.62 : x
  2. Step 2: Convert to fraction form
    711,993.65/982,553.49 = 389,724.62/x
  3. Step 3: Cross multiply
    711,993.65x = 982,553.49 × 389,724.62
  4. Step 4: Simplify right side
    711,993.65x = 382,925,280,607.16
  5. Step 5: Solve for x
    x = 382,925,280,607.16/711,993.65
  6. Step 6: Final answer
    x = 537,821.21

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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.