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Finding the Fourth Proportional to 135,151.63, 186,294.53 and 106,425.72

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Solution

The fourth proportional to 135,151.63, 186,294.53 and 106,425.72 is: 146,698.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,151.63 : 186,294.53 = 106,425.72 : x
  2. Step 2: Convert to fraction form
    135,151.63/186,294.53 = 106,425.72/x
  3. Step 3: Cross multiply
    135,151.63x = 186,294.53 × 106,425.72
  4. Step 4: Simplify right side
    135,151.63x = 19,826,529,753.38
  5. Step 5: Solve for x
    x = 19,826,529,753.38/135,151.63
  6. Step 6: Final answer
    x = 146,698.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.