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Finding the Fourth Proportional to 81,790.86, 112,875.39 and 45,992.10

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Solution

The fourth proportional to 81,790.86, 112,875.39 and 45,992.10 is: 63,471.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,790.86 : 112,875.39 = 45,992.10 : x
  2. Step 2: Convert to fraction form
    81,790.86/112,875.39 = 45,992.10/x
  3. Step 3: Cross multiply
    81,790.86x = 112,875.39 × 45,992.10
  4. Step 4: Simplify right side
    81,790.86x = 5,191,376,224.42
  5. Step 5: Solve for x
    x = 5,191,376,224.42/81,790.86
  6. Step 6: Final answer
    x = 63,471.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.