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Finding the Fourth Proportional to 76,736,638.60, 115,104,957.90 and 76,736,638.60

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Solution

The fourth proportional to 76,736,638.60, 115,104,957.90 and 76,736,638.60 is: 115,104,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,736,638.60 : 115,104,957.90 = 76,736,638.60 : x
  2. Step 2: Convert to fraction form
    76,736,638.60/115,104,957.90 = 76,736,638.60/x
  3. Step 3: Cross multiply
    76,736,638.60x = 115,104,957.90 × 76,736,638.60
  4. Step 4: Simplify right side
    76,736,638.60x = 8,832,767,555,440,515
  5. Step 5: Solve for x
    x = 8,832,767,555,440,515/76,736,638.60
  6. Step 6: Final answer
    x = 115,104,957.90

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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.