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Finding the Fourth Proportional to 194,449.80, 291,501.90 and 127,921.80

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Solution

The fourth proportional to 194,449.80, 291,501.90 and 127,921.80 is: 191,769.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,449.80 : 291,501.90 = 127,921.80 : x
  2. Step 2: Convert to fraction form
    194,449.80/291,501.90 = 127,921.80/x
  3. Step 3: Cross multiply
    194,449.80x = 291,501.90 × 127,921.80
  4. Step 4: Simplify right side
    194,449.80x = 37,289,447,751.42
  5. Step 5: Solve for x
    x = 37,289,447,751.42/194,449.80
  6. Step 6: Final answer
    x = 191,769.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.