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Finding the Fourth Proportional to 74,732,978.60, 112,099,467.90 and 59,616,434.60

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Solution

The fourth proportional to 74,732,978.60, 112,099,467.90 and 59,616,434.60 is: 89,424,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,732,978.60 : 112,099,467.90 = 59,616,434.60 : x
  2. Step 2: Convert to fraction form
    74,732,978.60/112,099,467.90 = 59,616,434.60/x
  3. Step 3: Cross multiply
    74,732,978.60x = 112,099,467.90 × 59,616,434.60
  4. Step 4: Simplify right side
    74,732,978.60x = 6,682,970,596,755,150
  5. Step 5: Solve for x
    x = 6,682,970,596,755,150/74,732,978.60
  6. Step 6: Final answer
    x = 89,424,651.90

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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.