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Finding the Fourth Proportional to 186,198.76, 257,041.38 and 119,169.64

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Solution

The fourth proportional to 186,198.76, 257,041.38 and 119,169.64 is: 164,509.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,198.76 : 257,041.38 = 119,169.64 : x
  2. Step 2: Convert to fraction form
    186,198.76/257,041.38 = 119,169.64/x
  3. Step 3: Cross multiply
    186,198.76x = 257,041.38 × 119,169.64
  4. Step 4: Simplify right side
    186,198.76x = 30,631,528,719.70
  5. Step 5: Solve for x
    x = 30,631,528,719.70/186,198.76
  6. Step 6: Final answer
    x = 164,509.84

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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.