Home / 129,416,725.52-178,599,488.57-76,538,761.19

Finding the Fourth Proportional to 129,416,725.52, 178,599,488.57 and 76,538,761.19

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Solution

The fourth proportional to 129,416,725.52, 178,599,488.57 and 76,538,761.19 is: 105,626,097.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,416,725.52 : 178,599,488.57 = 76,538,761.19 : x
  2. Step 2: Convert to fraction form
    129,416,725.52/178,599,488.57 = 76,538,761.19/x
  3. Step 3: Cross multiply
    129,416,725.52x = 178,599,488.57 × 76,538,761.19
  4. Step 4: Simplify right side
    129,416,725.52x = 13,669,783,605,431,976
  5. Step 5: Solve for x
    x = 13,669,783,605,431,976/129,416,725.52
  6. Step 6: Final answer
    x = 105,626,097.02

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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.