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Finding the Fourth Proportional to 170,116.80, 255,272.40 and 65,011.20

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Solution

The fourth proportional to 170,116.80, 255,272.40 and 65,011.20 is: 97,553.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,116.80 : 255,272.40 = 65,011.20 : x
  2. Step 2: Convert to fraction form
    170,116.80/255,272.40 = 65,011.20/x
  3. Step 3: Cross multiply
    170,116.80x = 255,272.40 × 65,011.20
  4. Step 4: Simplify right side
    170,116.80x = 16,595,565,050.88
  5. Step 5: Solve for x
    x = 16,595,565,050.88/170,116.80
  6. Step 6: Final answer
    x = 97,553.95

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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.