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Finding the Fourth Proportional to 175,043.70, 262,565.55 and 81,731.70

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Solution

The fourth proportional to 175,043.70, 262,565.55 and 81,731.70 is: 122,597.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,043.70 : 262,565.55 = 81,731.70 : x
  2. Step 2: Convert to fraction form
    175,043.70/262,565.55 = 81,731.70/x
  3. Step 3: Cross multiply
    175,043.70x = 262,565.55 × 81,731.70
  4. Step 4: Simplify right side
    175,043.70x = 21,459,928,762.94
  5. Step 5: Solve for x
    x = 21,459,928,762.94/175,043.70
  6. Step 6: Final answer
    x = 122,597.55

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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.