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Finding the Fourth Proportional to 70,797.09, 97,688.79 and 40,576.59

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Solution

The fourth proportional to 70,797.09, 97,688.79 and 40,576.59 is: 55,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,797.09 : 97,688.79 = 40,576.59 : x
  2. Step 2: Convert to fraction form
    70,797.09/97,688.79 = 40,576.59/x
  3. Step 3: Cross multiply
    70,797.09x = 97,688.79 × 40,576.59
  4. Step 4: Simplify right side
    70,797.09x = 3,963,877,979.43
  5. Step 5: Solve for x
    x = 3,963,877,979.43/70,797.09
  6. Step 6: Final answer
    x = 55,989.28

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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.