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Finding the Fourth Proportional to 70,472.56, 105,708.84 and 23,721.52

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Solution

The fourth proportional to 70,472.56, 105,708.84 and 23,721.52 is: 35,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,472.56 : 105,708.84 = 23,721.52 : x
  2. Step 2: Convert to fraction form
    70,472.56/105,708.84 = 23,721.52/x
  3. Step 3: Cross multiply
    70,472.56x = 105,708.84 × 23,721.52
  4. Step 4: Simplify right side
    70,472.56x = 2,507,574,362.24
  5. Step 5: Solve for x
    x = 2,507,574,362.24/70,472.56
  6. Step 6: Final answer
    x = 35,582.28

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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.