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Finding the Fourth Proportional to 194,663.20, 291,994.80 and 76,338.40

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Solution

The fourth proportional to 194,663.20, 291,994.80 and 76,338.40 is: 114,507.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,663.20 : 291,994.80 = 76,338.40 : x
  2. Step 2: Convert to fraction form
    194,663.20/291,994.80 = 76,338.40/x
  3. Step 3: Cross multiply
    194,663.20x = 291,994.80 × 76,338.40
  4. Step 4: Simplify right side
    194,663.20x = 22,290,415,840.32
  5. Step 5: Solve for x
    x = 22,290,415,840.32/194,663.20
  6. Step 6: Final answer
    x = 114,507.60

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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.