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Finding the Fourth Proportional to 57,395.64, 86,099.74 and 19,472.29

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Solution

The fourth proportional to 57,395.64, 86,099.74 and 19,472.29 is: 29,210.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,395.64 : 86,099.74 = 19,472.29 : x
  2. Step 2: Convert to fraction form
    57,395.64/86,099.74 = 19,472.29/x
  3. Step 3: Cross multiply
    57,395.64x = 86,099.74 × 19,472.29
  4. Step 4: Simplify right side
    57,395.64x = 1,676,559,334.50
  5. Step 5: Solve for x
    x = 1,676,559,334.50/57,395.64
  6. Step 6: Final answer
    x = 29,210.57

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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.