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Finding the Fourth Proportional to 49,881.70, 74,713.20 and 43,320.70

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Solution

The fourth proportional to 49,881.70, 74,713.20 and 43,320.70 is: 64,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,881.70 : 74,713.20 = 43,320.70 : x
  2. Step 2: Convert to fraction form
    49,881.70/74,713.20 = 43,320.70/x
  3. Step 3: Cross multiply
    49,881.70x = 74,713.20 × 43,320.70
  4. Step 4: Simplify right side
    49,881.70x = 3,236,628,123.24
  5. Step 5: Solve for x
    x = 3,236,628,123.24/49,881.70
  6. Step 6: Final answer
    x = 64,886.08

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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.