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Finding the Fourth Proportional to 111,032.90, 166,512.90 and 40,903.10

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Solution

The fourth proportional to 111,032.90, 166,512.90 and 40,903.10 is: 61,341.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,032.90 : 166,512.90 = 40,903.10 : x
  2. Step 2: Convert to fraction form
    111,032.90/166,512.90 = 40,903.10/x
  3. Step 3: Cross multiply
    111,032.90x = 166,512.90 × 40,903.10
  4. Step 4: Simplify right side
    111,032.90x = 6,810,893,799.99
  5. Step 5: Solve for x
    x = 6,810,893,799.99/111,032.90
  6. Step 6: Final answer
    x = 61,341.22

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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.