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Finding the Fourth Proportional to 711,889.32, 982,398.02 and 389,593.56

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Solution

The fourth proportional to 711,889.32, 982,398.02 and 389,593.56 is: 537,634.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,889.32 : 982,398.02 = 389,593.56 : x
  2. Step 2: Convert to fraction form
    711,889.32/982,398.02 = 389,593.56/x
  3. Step 3: Cross multiply
    711,889.32x = 982,398.02 × 389,593.56
  4. Step 4: Simplify right side
    711,889.32x = 382,735,941,948.75
  5. Step 5: Solve for x
    x = 382,735,941,948.75/711,889.32
  6. Step 6: Final answer
    x = 537,634.06

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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.