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Finding the Fourth Proportional to 117,369.60, 176,032.80 and 72,916.80

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Solution

The fourth proportional to 117,369.60, 176,032.80 and 72,916.80 is: 109,361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,369.60 : 176,032.80 = 72,916.80 : x
  2. Step 2: Convert to fraction form
    117,369.60/176,032.80 = 72,916.80/x
  3. Step 3: Cross multiply
    117,369.60x = 176,032.80 × 72,916.80
  4. Step 4: Simplify right side
    117,369.60x = 12,835,748,471.04
  5. Step 5: Solve for x
    x = 12,835,748,471.04/117,369.60
  6. Step 6: Final answer
    x = 109,361.78

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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.