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Finding the Fourth Proportional to 74,751,639.60, 112,127,459.40 and 45,904,234.80

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Solution

The fourth proportional to 74,751,639.60, 112,127,459.40 and 45,904,234.80 is: 68,856,352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,751,639.60 : 112,127,459.40 = 45,904,234.80 : x
  2. Step 2: Convert to fraction form
    74,751,639.60/112,127,459.40 = 45,904,234.80/x
  3. Step 3: Cross multiply
    74,751,639.60x = 112,127,459.40 × 45,904,234.80
  4. Step 4: Simplify right side
    74,751,639.60x = 5,147,125,223,825,067
  5. Step 5: Solve for x
    x = 5,147,125,223,825,067/74,751,639.60
  6. Step 6: Final answer
    x = 68,856,352.20

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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.