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Finding the Fourth Proportional to 173,868.60, 260,900.10 and 74,011.80

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Solution

The fourth proportional to 173,868.60, 260,900.10 and 74,011.80 is: 111,059.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,868.60 : 260,900.10 = 74,011.80 : x
  2. Step 2: Convert to fraction form
    173,868.60/260,900.10 = 74,011.80/x
  3. Step 3: Cross multiply
    173,868.60x = 260,900.10 × 74,011.80
  4. Step 4: Simplify right side
    173,868.60x = 19,309,686,021.18
  5. Step 5: Solve for x
    x = 19,309,686,021.18/173,868.60
  6. Step 6: Final answer
    x = 111,059.08

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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.