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Finding the Fourth Proportional to 117,875.15, 162,671.24 and 72,579.27

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Solution

The fourth proportional to 117,875.15, 162,671.24 and 72,579.27 is: 100,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,875.15 : 162,671.24 = 72,579.27 : x
  2. Step 2: Convert to fraction form
    117,875.15/162,671.24 = 72,579.27/x
  3. Step 3: Cross multiply
    117,875.15x = 162,671.24 × 72,579.27
  4. Step 4: Simplify right side
    117,875.15x = 11,806,559,849.19
  5. Step 5: Solve for x
    x = 11,806,559,849.19/117,875.15
  6. Step 6: Final answer
    x = 100,161.57

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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.