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Finding the Fourth Proportional to 107,070.78, 147,751.25 and 59,320.68

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Solution

The fourth proportional to 107,070.78, 147,751.25 and 59,320.68 is: 81,858.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,070.78 : 147,751.25 = 59,320.68 : x
  2. Step 2: Convert to fraction form
    107,070.78/147,751.25 = 59,320.68/x
  3. Step 3: Cross multiply
    107,070.78x = 147,751.25 × 59,320.68
  4. Step 4: Simplify right side
    107,070.78x = 8,764,704,620.85
  5. Step 5: Solve for x
    x = 8,764,704,620.85/107,070.78
  6. Step 6: Final answer
    x = 81,858.98

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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.