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Finding the Fourth Proportional to 322,695.64, 484,066.58 and 86,037.08

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Solution

The fourth proportional to 322,695.64, 484,066.58 and 86,037.08 is: 129,061.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,695.64 : 484,066.58 = 86,037.08 : x
  2. Step 2: Convert to fraction form
    322,695.64/484,066.58 = 86,037.08/x
  3. Step 3: Cross multiply
    322,695.64x = 484,066.58 × 86,037.08
  4. Step 4: Simplify right side
    322,695.64x = 41,647,675,068.79
  5. Step 5: Solve for x
    x = 41,647,675,068.79/322,695.64
  6. Step 6: Final answer
    x = 129,061.78

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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.