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Finding the Fourth Proportional to 76,656,138.70, 114,984,208.05 and 76,656,138.70

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Solution

The fourth proportional to 76,656,138.70, 114,984,208.05 and 76,656,138.70 is: 114,984,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,656,138.70 : 114,984,208.05 = 76,656,138.70 : x
  2. Step 2: Convert to fraction form
    76,656,138.70/114,984,208.05 = 76,656,138.70/x
  3. Step 3: Cross multiply
    76,656,138.70x = 114,984,208.05 × 76,656,138.70
  4. Step 4: Simplify right side
    76,656,138.70x = 8,814,245,400,590,457
  5. Step 5: Solve for x
    x = 8,814,245,400,590,457/76,656,138.70
  6. Step 6: Final answer
    x = 114,984,208.05

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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.