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Finding the Fourth Proportional to 141,862.60, 212,009.81 and 133,668.52

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Solution

The fourth proportional to 141,862.60, 212,009.81 and 133,668.52 is: 199,763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,862.60 : 212,009.81 = 133,668.52 : x
  2. Step 2: Convert to fraction form
    141,862.60/212,009.81 = 133,668.52/x
  3. Step 3: Cross multiply
    141,862.60x = 212,009.81 × 133,668.52
  4. Step 4: Simplify right side
    141,862.60x = 28,339,037,528.18
  5. Step 5: Solve for x
    x = 28,339,037,528.18/141,862.60
  6. Step 6: Final answer
    x = 199,763.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.