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Finding the Fourth Proportional to 88,733,978.80, 133,100,968.20 and 31,225,793.20

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Solution

The fourth proportional to 88,733,978.80, 133,100,968.20 and 31,225,793.20 is: 46,838,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,733,978.80 : 133,100,968.20 = 31,225,793.20 : x
  2. Step 2: Convert to fraction form
    88,733,978.80/133,100,968.20 = 31,225,793.20/x
  3. Step 3: Cross multiply
    88,733,978.80x = 133,100,968.20 × 31,225,793.20
  4. Step 4: Simplify right side
    88,733,978.80x = 4,156,183,307,732,976
  5. Step 5: Solve for x
    x = 4,156,183,307,732,976/88,733,978.80
  6. Step 6: Final answer
    x = 46,838,689.80

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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.