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Finding the Fourth Proportional to 123,039.55, 184,559.41 and 70,412.13

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Solution

The fourth proportional to 123,039.55, 184,559.41 and 70,412.13 is: 105,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,039.55 : 184,559.41 = 70,412.13 : x
  2. Step 2: Convert to fraction form
    123,039.55/184,559.41 = 70,412.13/x
  3. Step 3: Cross multiply
    123,039.55x = 184,559.41 × 70,412.13
  4. Step 4: Simplify right side
    123,039.55x = 12,995,221,169.64
  5. Step 5: Solve for x
    x = 12,995,221,169.64/123,039.55
  6. Step 6: Final answer
    x = 105,618.24

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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.