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Finding the Fourth Proportional to 66,430,986.80, 99,646,480.20 and 66,430,986.80

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Solution

The fourth proportional to 66,430,986.80, 99,646,480.20 and 66,430,986.80 is: 99,646,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,986.80 : 99,646,480.20 = 66,430,986.80 : x
  2. Step 2: Convert to fraction form
    66,430,986.80/99,646,480.20 = 66,430,986.80/x
  3. Step 3: Cross multiply
    66,430,986.80x = 99,646,480.20 × 66,430,986.80
  4. Step 4: Simplify right side
    66,430,986.80x = 6,619,614,010,832,661
  5. Step 5: Solve for x
    x = 6,619,614,010,832,661/66,430,986.80
  6. Step 6: Final answer
    x = 99,646,480.20

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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.