Home / 129,064,912-193,724,914.62-68,480,638

Finding the Fourth Proportional to 129,064,912, 193,724,914.62 and 68,480,638

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Solution

The fourth proportional to 129,064,912, 193,724,914.62 and 68,480,638 is: 102,788,632.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,064,912 : 193,724,914.62 = 68,480,638 : x
  2. Step 2: Convert to fraction form
    129,064,912/193,724,914.62 = 68,480,638/x
  3. Step 3: Cross multiply
    129,064,912x = 193,724,914.62 × 68,480,638
  4. Step 4: Simplify right side
    129,064,912x = 13,266,405,749,673,128
  5. Step 5: Solve for x
    x = 13,266,405,749,673,128/129,064,912
  6. Step 6: Final answer
    x = 102,788,632.05

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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.