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Finding the Fourth Proportional to 113,871.70, 170,811.60 and 34,985.80

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Solution

The fourth proportional to 113,871.70, 170,811.60 and 34,985.80 is: 52,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,871.70 : 170,811.60 = 34,985.80 : x
  2. Step 2: Convert to fraction form
    113,871.70/170,811.60 = 34,985.80/x
  3. Step 3: Cross multiply
    113,871.70x = 170,811.60 × 34,985.80
  4. Step 4: Simplify right side
    113,871.70x = 5,975,980,475.28
  5. Step 5: Solve for x
    x = 5,975,980,475.28/113,871.70
  6. Step 6: Final answer
    x = 52,479.94

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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.