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Finding the Fourth Proportional to 186,872.38, 257,880.27 and 101,990.05

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Solution

The fourth proportional to 186,872.38, 257,880.27 and 101,990.05 is: 140,744.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,872.38 : 257,880.27 = 101,990.05 : x
  2. Step 2: Convert to fraction form
    186,872.38/257,880.27 = 101,990.05/x
  3. Step 3: Cross multiply
    186,872.38x = 257,880.27 × 101,990.05
  4. Step 4: Simplify right side
    186,872.38x = 26,301,221,631.31
  5. Step 5: Solve for x
    x = 26,301,221,631.31/186,872.38
  6. Step 6: Final answer
    x = 140,744.30

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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.