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Finding the Fourth Proportional to 66,430,270.80, 99,645,406.20 and 66,430,270.80

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Solution

The fourth proportional to 66,430,270.80, 99,645,406.20 and 66,430,270.80 is: 99,645,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,270.80 : 99,645,406.20 = 66,430,270.80 : x
  2. Step 2: Convert to fraction form
    66,430,270.80/99,645,406.20 = 66,430,270.80/x
  3. Step 3: Cross multiply
    66,430,270.80x = 99,645,406.20 × 66,430,270.80
  4. Step 4: Simplify right side
    66,430,270.80x = 6,619,471,317,841,999
  5. Step 5: Solve for x
    x = 6,619,471,317,841,999/66,430,270.80
  6. Step 6: Final answer
    x = 99,645,406.20

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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.