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Finding the Fourth Proportional to 97,235.40, 145,910.70 and 70,873.80

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Solution

The fourth proportional to 97,235.40, 145,910.70 and 70,873.80 is: 106,352.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,235.40 : 145,910.70 = 70,873.80 : x
  2. Step 2: Convert to fraction form
    97,235.40/145,910.70 = 70,873.80/x
  3. Step 3: Cross multiply
    97,235.40x = 145,910.70 × 70,873.80
  4. Step 4: Simplify right side
    97,235.40x = 10,341,245,769.66
  5. Step 5: Solve for x
    x = 10,341,245,769.66/97,235.40
  6. Step 6: Final answer
    x = 106,352.68

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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.