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Finding the Fourth Proportional to 34,978.68, 48,265.08 and 19,662.18

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Solution

The fourth proportional to 34,978.68, 48,265.08 and 19,662.18 is: 27,130.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,978.68 : 48,265.08 = 19,662.18 : x
  2. Step 2: Convert to fraction form
    34,978.68/48,265.08 = 19,662.18/x
  3. Step 3: Cross multiply
    34,978.68x = 48,265.08 × 19,662.18
  4. Step 4: Simplify right side
    34,978.68x = 948,996,690.67
  5. Step 5: Solve for x
    x = 948,996,690.67/34,978.68
  6. Step 6: Final answer
    x = 27,130.72

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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.