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Finding the Fourth Proportional to 712,219.29, 982,825.29 and 389,867.64

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Solution

The fourth proportional to 712,219.29, 982,825.29 and 389,867.64 is: 537,996.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,219.29 : 982,825.29 = 389,867.64 : x
  2. Step 2: Convert to fraction form
    712,219.29/982,825.29 = 389,867.64/x
  3. Step 3: Cross multiply
    712,219.29x = 982,825.29 × 389,867.64
  4. Step 4: Simplify right side
    712,219.29x = 383,171,775,232.82
  5. Step 5: Solve for x
    x = 383,171,775,232.82/712,219.29
  6. Step 6: Final answer
    x = 537,996.91

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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.