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Finding the Fourth Proportional to 108,765.20, 163,585.20 and 97,392.80

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Solution

The fourth proportional to 108,765.20, 163,585.20 and 97,392.80 is: 146,480.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,765.20 : 163,585.20 = 97,392.80 : x
  2. Step 2: Convert to fraction form
    108,765.20/163,585.20 = 97,392.80/x
  3. Step 3: Cross multiply
    108,765.20x = 163,585.20 × 97,392.80
  4. Step 4: Simplify right side
    108,765.20x = 15,932,020,666.56
  5. Step 5: Solve for x
    x = 15,932,020,666.56/108,765.20
  6. Step 6: Final answer
    x = 146,480.87

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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.