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Finding the Fourth Proportional to 123,776.09, 170,814.53 and 67,191.11

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Solution

The fourth proportional to 123,776.09, 170,814.53 and 67,191.11 is: 92,725.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,776.09 : 170,814.53 = 67,191.11 : x
  2. Step 2: Convert to fraction form
    123,776.09/170,814.53 = 67,191.11/x
  3. Step 3: Cross multiply
    123,776.09x = 170,814.53 × 67,191.11
  4. Step 4: Simplify right side
    123,776.09x = 11,477,217,538.87
  5. Step 5: Solve for x
    x = 11,477,217,538.87/123,776.09
  6. Step 6: Final answer
    x = 92,725.64

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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.