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Finding the Fourth Proportional to 123,065.40, 184,598.10 and 91,961.40

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Solution

The fourth proportional to 123,065.40, 184,598.10 and 91,961.40 is: 137,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,065.40 : 184,598.10 = 91,961.40 : x
  2. Step 2: Convert to fraction form
    123,065.40/184,598.10 = 91,961.40/x
  3. Step 3: Cross multiply
    123,065.40x = 184,598.10 × 91,961.40
  4. Step 4: Simplify right side
    123,065.40x = 16,975,899,713.34
  5. Step 5: Solve for x
    x = 16,975,899,713.34/123,065.40
  6. Step 6: Final answer
    x = 137,942.10

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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.