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Finding the Fourth Proportional to 117,447.30, 176,113.54 and 81,925.64

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Solution

The fourth proportional to 117,447.30, 176,113.54 and 81,925.64 is: 122,848.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,447.30 : 176,113.54 = 81,925.64 : x
  2. Step 2: Convert to fraction form
    117,447.30/176,113.54 = 81,925.64/x
  3. Step 3: Cross multiply
    117,447.30x = 176,113.54 × 81,925.64
  4. Step 4: Simplify right side
    117,447.30x = 14,428,214,265.38
  5. Step 5: Solve for x
    x = 14,428,214,265.38/117,447.30
  6. Step 6: Final answer
    x = 122,848.41

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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.