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Finding the Fourth Proportional to 66,072,212.90, 99,108,319.35 and 66,072,212.90

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Solution

The fourth proportional to 66,072,212.90, 99,108,319.35 and 66,072,212.90 is: 99,108,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,072,212.90 : 99,108,319.35 = 66,072,212.90 : x
  2. Step 2: Convert to fraction form
    66,072,212.90/99,108,319.35 = 66,072,212.90/x
  3. Step 3: Cross multiply
    66,072,212.90x = 99,108,319.35 × 66,072,212.90
  4. Step 4: Simplify right side
    66,072,212.90x = 6,548,305,976,254,389
  5. Step 5: Solve for x
    x = 6,548,305,976,254,389/66,072,212.90
  6. Step 6: Final answer
    x = 99,108,319.35

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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.