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Finding the Fourth Proportional to 71,569,651.60, 107,385,970.20 and 33,211,421.20

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Solution

The fourth proportional to 71,569,651.60, 107,385,970.20 and 33,211,421.20 is: 49,831,745.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,569,651.60 : 107,385,970.20 = 33,211,421.20 : x
  2. Step 2: Convert to fraction form
    71,569,651.60/107,385,970.20 = 33,211,421.20/x
  3. Step 3: Cross multiply
    71,569,651.60x = 107,385,970.20 × 33,211,421.20
  4. Step 4: Simplify right side
    71,569,651.60x = 3,566,440,687,282,848.50
  5. Step 5: Solve for x
    x = 3,566,440,687,282,848.50/71,569,651.60
  6. Step 6: Final answer
    x = 49,831,745.82

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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.