Home / 129,416,754.81-178,599,529.06-76,538,790.44

Finding the Fourth Proportional to 129,416,754.81, 178,599,529.06 and 76,538,790.44

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Solution

The fourth proportional to 129,416,754.81, 178,599,529.06 and 76,538,790.44 is: 105,626,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,416,754.81 : 178,599,529.06 = 76,538,790.44 : x
  2. Step 2: Convert to fraction form
    129,416,754.81/178,599,529.06 = 76,538,790.44/x
  3. Step 3: Cross multiply
    129,416,754.81x = 178,599,529.06 × 76,538,790.44
  4. Step 4: Simplify right side
    129,416,754.81x = 13,669,791,926,991,434
  5. Step 5: Solve for x
    x = 13,669,791,926,991,434/129,416,754.81
  6. Step 6: Final answer
    x = 105,626,137.41

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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.