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Finding the Fourth Proportional to 711,993.54, 982,547.49 and 385,306.30

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Solution

The fourth proportional to 711,993.54, 982,547.49 and 385,306.30 is: 531,720.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,993.54 : 982,547.49 = 385,306.30 : x
  2. Step 2: Convert to fraction form
    711,993.54/982,547.49 = 385,306.30/x
  3. Step 3: Cross multiply
    711,993.54x = 982,547.49 × 385,306.30
  4. Step 4: Simplify right side
    711,993.54x = 378,581,737,946.19
  5. Step 5: Solve for x
    x = 378,581,737,946.19/711,993.54
  6. Step 6: Final answer
    x = 531,720.75

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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.