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Finding the Fourth Proportional to 25,410.97, 38,130.99 and 19,848.70

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Solution

The fourth proportional to 25,410.97, 38,130.99 and 19,848.70 is: 29,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,410.97 : 38,130.99 = 19,848.70 : x
  2. Step 2: Convert to fraction form
    25,410.97/38,130.99 = 19,848.70/x
  3. Step 3: Cross multiply
    25,410.97x = 38,130.99 × 19,848.70
  4. Step 4: Simplify right side
    25,410.97x = 756,850,581.21
  5. Step 5: Solve for x
    x = 756,850,581.21/25,410.97
  6. Step 6: Final answer
    x = 29,784.40

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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.