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Finding the Fourth Proportional to 194,178.80, 291,268.20 and 131,970.80

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Solution

The fourth proportional to 194,178.80, 291,268.20 and 131,970.80 is: 197,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,178.80 : 291,268.20 = 131,970.80 : x
  2. Step 2: Convert to fraction form
    194,178.80/291,268.20 = 131,970.80/x
  3. Step 3: Cross multiply
    194,178.80x = 291,268.20 × 131,970.80
  4. Step 4: Simplify right side
    194,178.80x = 38,438,897,368.56
  5. Step 5: Solve for x
    x = 38,438,897,368.56/194,178.80
  6. Step 6: Final answer
    x = 197,956.20

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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.