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Finding the Fourth Proportional to 389,018.57, 536,824.87 and 216,954.18

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Solution

The fourth proportional to 389,018.57, 536,824.87 and 216,954.18 is: 299,385.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,018.57 : 536,824.87 = 216,954.18 : x
  2. Step 2: Convert to fraction form
    389,018.57/536,824.87 = 216,954.18/x
  3. Step 3: Cross multiply
    389,018.57x = 536,824.87 × 216,954.18
  4. Step 4: Simplify right side
    389,018.57x = 116,466,398,932.07
  5. Step 5: Solve for x
    x = 116,466,398,932.07/389,018.57
  6. Step 6: Final answer
    x = 299,385.19

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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.