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Finding the Fourth Proportional to 79,921,724.55, 110,291,978.84 and 43,252,295.55

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Solution

The fourth proportional to 79,921,724.55, 110,291,978.84 and 43,252,295.55 is: 59,688,167.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,921,724.55 : 110,291,978.84 = 43,252,295.55 : x
  2. Step 2: Convert to fraction form
    79,921,724.55/110,291,978.84 = 43,252,295.55/x
  3. Step 3: Cross multiply
    79,921,724.55x = 110,291,978.84 × 43,252,295.55
  4. Step 4: Simplify right side
    79,921,724.55x = 4,770,381,265,365,764
  5. Step 5: Solve for x
    x = 4,770,381,265,365,764/79,921,724.55
  6. Step 6: Final answer
    x = 59,688,167.29

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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.