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Finding the Fourth Proportional to 124,515.92, 171,776.34 and 76,751.84

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Solution

The fourth proportional to 124,515.92, 171,776.34 and 76,751.84 is: 105,883.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,515.92 : 171,776.34 = 76,751.84 : x
  2. Step 2: Convert to fraction form
    124,515.92/171,776.34 = 76,751.84/x
  3. Step 3: Cross multiply
    124,515.92x = 171,776.34 × 76,751.84
  4. Step 4: Simplify right side
    124,515.92x = 13,184,150,163.47
  5. Step 5: Solve for x
    x = 13,184,150,163.47/124,515.92
  6. Step 6: Final answer
    x = 105,883.25

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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.