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Finding the Fourth Proportional to 144,908.40, 217,362.60 and 82,700.40

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Solution

The fourth proportional to 144,908.40, 217,362.60 and 82,700.40 is: 124,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,908.40 : 217,362.60 = 82,700.40 : x
  2. Step 2: Convert to fraction form
    144,908.40/217,362.60 = 82,700.40/x
  3. Step 3: Cross multiply
    144,908.40x = 217,362.60 × 82,700.40
  4. Step 4: Simplify right side
    144,908.40x = 17,975,973,965.04
  5. Step 5: Solve for x
    x = 17,975,973,965.04/144,908.40
  6. Step 6: Final answer
    x = 124,050.60

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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.