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Finding the Fourth Proportional to 650,961.97, 898,433.93 and 389,300.18

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Solution

The fourth proportional to 650,961.97, 898,433.93 and 389,300.18 is: 537,297.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,961.97 : 898,433.93 = 389,300.18 : x
  2. Step 2: Convert to fraction form
    650,961.97/898,433.93 = 389,300.18/x
  3. Step 3: Cross multiply
    650,961.97x = 898,433.93 × 389,300.18
  4. Step 4: Simplify right side
    650,961.97x = 349,760,484,958.38
  5. Step 5: Solve for x
    x = 349,760,484,958.38/650,961.97
  6. Step 6: Final answer
    x = 537,297.88

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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.