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Finding the Fourth Proportional to 186,359.70, 257,169.36 and 113,883.78

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Solution

The fourth proportional to 186,359.70, 257,169.36 and 113,883.78 is: 157,155.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,359.70 : 257,169.36 = 113,883.78 : x
  2. Step 2: Convert to fraction form
    186,359.70/257,169.36 = 113,883.78/x
  3. Step 3: Cross multiply
    186,359.70x = 257,169.36 × 113,883.78
  4. Step 4: Simplify right side
    186,359.70x = 29,287,418,816.98
  5. Step 5: Solve for x
    x = 29,287,418,816.98/186,359.70
  6. Step 6: Final answer
    x = 157,155.32

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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.