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Finding the Fourth Proportional to 141,954.64, 212,681.40 and 126,509.56

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Solution

The fourth proportional to 141,954.64, 212,681.40 and 126,509.56 is: 189,541.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,954.64 : 212,681.40 = 126,509.56 : x
  2. Step 2: Convert to fraction form
    141,954.64/212,681.40 = 126,509.56/x
  3. Step 3: Cross multiply
    141,954.64x = 212,681.40 × 126,509.56
  4. Step 4: Simplify right side
    141,954.64x = 26,906,230,334.18
  5. Step 5: Solve for x
    x = 26,906,230,334.18/141,954.64
  6. Step 6: Final answer
    x = 189,541.04

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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.