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Finding the Fourth Proportional to 144,972,281.20, 217,458,421.80 and 49,234,169.20

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Solution

The fourth proportional to 144,972,281.20, 217,458,421.80 and 49,234,169.20 is: 73,851,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,972,281.20 : 217,458,421.80 = 49,234,169.20 : x
  2. Step 2: Convert to fraction form
    144,972,281.20/217,458,421.80 = 49,234,169.20/x
  3. Step 3: Cross multiply
    144,972,281.20x = 217,458,421.80 × 49,234,169.20
  4. Step 4: Simplify right side
    144,972,281.20x = 10,706,384,732,866,170
  5. Step 5: Solve for x
    x = 10,706,384,732,866,170/144,972,281.20
  6. Step 6: Final answer
    x = 73,851,253.80

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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.