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Finding the Fourth Proportional to 65,012.68, 89,664.06 and 45,956.62

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Solution

The fourth proportional to 65,012.68, 89,664.06 and 45,956.62 is: 63,382.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,012.68 : 89,664.06 = 45,956.62 : x
  2. Step 2: Convert to fraction form
    65,012.68/89,664.06 = 45,956.62/x
  3. Step 3: Cross multiply
    65,012.68x = 89,664.06 × 45,956.62
  4. Step 4: Simplify right side
    65,012.68x = 4,120,657,133.08
  5. Step 5: Solve for x
    x = 4,120,657,133.08/65,012.68
  6. Step 6: Final answer
    x = 63,382.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.