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Finding the Fourth Proportional to 70,078.93, 105,055.89 and 25,695.34

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Solution

The fourth proportional to 70,078.93, 105,055.89 and 25,695.34 is: 38,520.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,078.93 : 105,055.89 = 25,695.34 : x
  2. Step 2: Convert to fraction form
    70,078.93/105,055.89 = 25,695.34/x
  3. Step 3: Cross multiply
    70,078.93x = 105,055.89 × 25,695.34
  4. Step 4: Simplify right side
    70,078.93x = 2,699,446,812.55
  5. Step 5: Solve for x
    x = 2,699,446,812.55/70,078.93
  6. Step 6: Final answer
    x = 38,520.09

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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.