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Finding the Fourth Proportional to 144,005.80, 215,900.70 and 73,935.40

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Solution

The fourth proportional to 144,005.80, 215,900.70 and 73,935.40 is: 110,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,005.80 : 215,900.70 = 73,935.40 : x
  2. Step 2: Convert to fraction form
    144,005.80/215,900.70 = 73,935.40/x
  3. Step 3: Cross multiply
    144,005.80x = 215,900.70 × 73,935.40
  4. Step 4: Simplify right side
    144,005.80x = 15,962,704,614.78
  5. Step 5: Solve for x
    x = 15,962,704,614.78/144,005.80
  6. Step 6: Final answer
    x = 110,847.65

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1.5x scale

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.