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Finding the Fourth Proportional to 76,712,869.56, 105,866,978.22 and 44,117,847.48

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Solution

The fourth proportional to 76,712,869.56, 105,866,978.22 and 44,117,847.48 is: 60,884,480.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,712,869.56 : 105,866,978.22 = 44,117,847.48 : x
  2. Step 2: Convert to fraction form
    76,712,869.56/105,866,978.22 = 44,117,847.48/x
  3. Step 3: Cross multiply
    76,712,869.56x = 105,866,978.22 × 44,117,847.48
  4. Step 4: Simplify right side
    76,712,869.56x = 4,670,623,198,278,441
  5. Step 5: Solve for x
    x = 4,670,623,198,278,441/76,712,869.56
  6. Step 6: Final answer
    x = 60,884,480.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.