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Finding the Fourth Proportional to 141,806.10, 212,709.15 and 57,606.60

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Solution

The fourth proportional to 141,806.10, 212,709.15 and 57,606.60 is: 86,409.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,806.10 : 212,709.15 = 57,606.60 : x
  2. Step 2: Convert to fraction form
    141,806.10/212,709.15 = 57,606.60/x
  3. Step 3: Cross multiply
    141,806.10x = 212,709.15 × 57,606.60
  4. Step 4: Simplify right side
    141,806.10x = 12,253,450,920.39
  5. Step 5: Solve for x
    x = 12,253,450,920.39/141,806.10
  6. Step 6: Final answer
    x = 86,409.90

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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.