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Finding the Fourth Proportional to 125,106.40, 187,662.03 and 40,866.81

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Solution

The fourth proportional to 125,106.40, 187,662.03 and 40,866.81 is: 61,301.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,106.40 : 187,662.03 = 40,866.81 : x
  2. Step 2: Convert to fraction form
    125,106.40/187,662.03 = 40,866.81/x
  3. Step 3: Cross multiply
    125,106.40x = 187,662.03 × 40,866.81
  4. Step 4: Simplify right side
    125,106.40x = 7,669,148,524.22
  5. Step 5: Solve for x
    x = 7,669,148,524.22/125,106.40
  6. Step 6: Final answer
    x = 61,301.01

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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.