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Finding the Fourth Proportional to 71,868,076.40, 107,802,114.60 and 26,420,466.80

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Solution

The fourth proportional to 71,868,076.40, 107,802,114.60 and 26,420,466.80 is: 39,630,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,868,076.40 : 107,802,114.60 = 26,420,466.80 : x
  2. Step 2: Convert to fraction form
    71,868,076.40/107,802,114.60 = 26,420,466.80/x
  3. Step 3: Cross multiply
    71,868,076.40x = 107,802,114.60 × 26,420,466.80
  4. Step 4: Simplify right side
    71,868,076.40x = 2,848,182,189,759,095
  5. Step 5: Solve for x
    x = 2,848,182,189,759,095/71,868,076.40
  6. Step 6: Final answer
    x = 39,630,700.20

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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.