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Finding the Fourth Proportional to 126,602.88, 189,862.20 and 46,622.40

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Solution

The fourth proportional to 126,602.88, 189,862.20 and 46,622.40 is: 69,918.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,602.88 : 189,862.20 = 46,622.40 : x
  2. Step 2: Convert to fraction form
    126,602.88/189,862.20 = 46,622.40/x
  3. Step 3: Cross multiply
    126,602.88x = 189,862.20 × 46,622.40
  4. Step 4: Simplify right side
    126,602.88x = 8,851,831,433.28
  5. Step 5: Solve for x
    x = 8,851,831,433.28/126,602.88
  6. Step 6: Final answer
    x = 69,918.09

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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.