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Finding the Fourth Proportional to 77,133.20, 115,694.94 and 24,580.40

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Solution

The fourth proportional to 77,133.20, 115,694.94 and 24,580.40 is: 36,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,133.20 : 115,694.94 = 24,580.40 : x
  2. Step 2: Convert to fraction form
    77,133.20/115,694.94 = 24,580.40/x
  3. Step 3: Cross multiply
    77,133.20x = 115,694.94 × 24,580.40
  4. Step 4: Simplify right side
    77,133.20x = 2,843,827,903.18
  5. Step 5: Solve for x
    x = 2,843,827,903.18/77,133.20
  6. Step 6: Final answer
    x = 36,869.05

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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.