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Finding the Fourth Proportional to 82,947,351.60, 124,421,027.40 and 25,448,497.20

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Solution

The fourth proportional to 82,947,351.60, 124,421,027.40 and 25,448,497.20 is: 38,172,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,947,351.60 : 124,421,027.40 = 25,448,497.20 : x
  2. Step 2: Convert to fraction form
    82,947,351.60/124,421,027.40 = 25,448,497.20/x
  3. Step 3: Cross multiply
    82,947,351.60x = 124,421,027.40 × 25,448,497.20
  4. Step 4: Simplify right side
    82,947,351.60x = 3,166,328,167,410,023.50
  5. Step 5: Solve for x
    x = 3,166,328,167,410,023.50/82,947,351.60
  6. Step 6: Final answer
    x = 38,172,745.80

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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.