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Finding the Fourth Proportional to 113,357.80, 170,036.70 and 107,914.60

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Solution

The fourth proportional to 113,357.80, 170,036.70 and 107,914.60 is: 161,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,357.80 : 170,036.70 = 107,914.60 : x
  2. Step 2: Convert to fraction form
    113,357.80/170,036.70 = 107,914.60/x
  3. Step 3: Cross multiply
    113,357.80x = 170,036.70 × 107,914.60
  4. Step 4: Simplify right side
    113,357.80x = 18,349,442,465.82
  5. Step 5: Solve for x
    x = 18,349,442,465.82/113,357.80
  6. Step 6: Final answer
    x = 161,871.90

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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.