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Finding the Fourth Proportional to 74,796,129.60, 112,161,016.80 and 34,385,812.80

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Solution

The fourth proportional to 74,796,129.60, 112,161,016.80 and 34,385,812.80 is: 51,563,466.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,796,129.60 : 112,161,016.80 = 34,385,812.80 : x
  2. Step 2: Convert to fraction form
    74,796,129.60/112,161,016.80 = 34,385,812.80/x
  3. Step 3: Cross multiply
    74,796,129.60x = 112,161,016.80 × 34,385,812.80
  4. Step 4: Simplify right side
    74,796,129.60x = 3,856,747,727,142,454.50
  5. Step 5: Solve for x
    x = 3,856,747,727,142,454.50/74,796,129.60
  6. Step 6: Final answer
    x = 51,563,466.56

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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.