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Finding the Fourth Proportional to 186,361.70, 257,172.12 and 113,885.78

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Solution

The fourth proportional to 186,361.70, 257,172.12 and 113,885.78 is: 157,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,361.70 : 257,172.12 = 113,885.78 : x
  2. Step 2: Convert to fraction form
    186,361.70/257,172.12 = 113,885.78/x
  3. Step 3: Cross multiply
    186,361.70x = 257,172.12 × 113,885.78
  4. Step 4: Simplify right side
    186,361.70x = 29,288,247,480.45
  5. Step 5: Solve for x
    x = 29,288,247,480.45/186,361.70
  6. Step 6: Final answer
    x = 157,158.08

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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.