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Finding the Fourth Proportional to 66,304,664.40, 99,456,996.60 and 48,388,760.40

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Solution

The fourth proportional to 66,304,664.40, 99,456,996.60 and 48,388,760.40 is: 72,583,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,304,664.40 : 99,456,996.60 = 48,388,760.40 : x
  2. Step 2: Convert to fraction form
    66,304,664.40/99,456,996.60 = 48,388,760.40/x
  3. Step 3: Cross multiply
    66,304,664.40x = 99,456,996.60 × 48,388,760.40
  4. Step 4: Simplify right side
    66,304,664.40x = 4,812,600,778,581,014
  5. Step 5: Solve for x
    x = 4,812,600,778,581,014/66,304,664.40
  6. Step 6: Final answer
    x = 72,583,140.60

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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.