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Finding the Fourth Proportional to 113,898.78, 170,848.80 and 74,704.14

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Solution

The fourth proportional to 113,898.78, 170,848.80 and 74,704.14 is: 112,056.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,898.78 : 170,848.80 = 74,704.14 : x
  2. Step 2: Convert to fraction form
    113,898.78/170,848.80 = 74,704.14/x
  3. Step 3: Cross multiply
    113,898.78x = 170,848.80 × 74,704.14
  4. Step 4: Simplify right side
    113,898.78x = 12,763,112,674.03
  5. Step 5: Solve for x
    x = 12,763,112,674.03/113,898.78
  6. Step 6: Final answer
    x = 112,056.62

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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.