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Finding the Fourth Proportional to 100,245.65, 138,288.87 and 59,948.82

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Solution

The fourth proportional to 100,245.65, 138,288.87 and 59,948.82 is: 82,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,245.65 : 138,288.87 = 59,948.82 : x
  2. Step 2: Convert to fraction form
    100,245.65/138,288.87 = 59,948.82/x
  3. Step 3: Cross multiply
    100,245.65x = 138,288.87 × 59,948.82
  4. Step 4: Simplify right side
    100,245.65x = 8,290,254,575.63
  5. Step 5: Solve for x
    x = 8,290,254,575.63/100,245.65
  6. Step 6: Final answer
    x = 82,699.40

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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.