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Finding the Fourth Proportional to 116,565.20, 174,934.20 and 85,461.20

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Solution

The fourth proportional to 116,565.20, 174,934.20 and 85,461.20 is: 128,255.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,565.20 : 174,934.20 = 85,461.20 : x
  2. Step 2: Convert to fraction form
    116,565.20/174,934.20 = 85,461.20/x
  3. Step 3: Cross multiply
    116,565.20x = 174,934.20 × 85,461.20
  4. Step 4: Simplify right side
    116,565.20x = 14,950,086,653.04
  5. Step 5: Solve for x
    x = 14,950,086,653.04/116,565.20
  6. Step 6: Final answer
    x = 128,255.15

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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.