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Finding the Fourth Proportional to 141,912.81, 212,842.49 and 53,147.34

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Solution

The fourth proportional to 141,912.81, 212,842.49 and 53,147.34 is: 79,711.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,912.81 : 212,842.49 = 53,147.34 : x
  2. Step 2: Convert to fraction form
    141,912.81/212,842.49 = 53,147.34/x
  3. Step 3: Cross multiply
    141,912.81x = 212,842.49 × 53,147.34
  4. Step 4: Simplify right side
    141,912.81x = 11,312,011,916.74
  5. Step 5: Solve for x
    x = 11,312,011,916.74/141,912.81
  6. Step 6: Final answer
    x = 79,711.00

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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.