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Finding the Fourth Proportional to 70,263.61, 105,346.12 and 25,884.66

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Solution

The fourth proportional to 70,263.61, 105,346.12 and 25,884.66 is: 38,808.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,263.61 : 105,346.12 = 25,884.66 : x
  2. Step 2: Convert to fraction form
    70,263.61/105,346.12 = 25,884.66/x
  3. Step 3: Cross multiply
    70,263.61x = 105,346.12 × 25,884.66
  4. Step 4: Simplify right side
    70,263.61x = 2,726,848,498.52
  5. Step 5: Solve for x
    x = 2,726,848,498.52/70,263.61
  6. Step 6: Final answer
    x = 38,808.83

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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.