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Finding the Fourth Proportional to 1,972,425.65, 2,956,168.67 and 1,059,364.31

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Solution

The fourth proportional to 1,972,425.65, 2,956,168.67 and 1,059,364.31 is: 1,587,719.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972,425.65 : 2,956,168.67 = 1,059,364.31 : x
  2. Step 2: Convert to fraction form
    1,972,425.65/2,956,168.67 = 1,059,364.31/x
  3. Step 3: Cross multiply
    1,972,425.65x = 2,956,168.67 × 1,059,364.31
  4. Step 4: Simplify right side
    1,972,425.65x = 3,131,659,563,260.50
  5. Step 5: Solve for x
    x = 3,131,659,563,260.50/1,972,425.65
  6. Step 6: Final answer
    x = 1,587,719.96

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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.