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Finding the Fourth Proportional to 1,971,873.89, 2,721,185.97 and 1,066,455.89

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Solution

The fourth proportional to 1,971,873.89, 2,721,185.97 and 1,066,455.89 is: 1,471,709.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,873.89 : 2,721,185.97 = 1,066,455.89 : x
  2. Step 2: Convert to fraction form
    1,971,873.89/2,721,185.97 = 1,066,455.89/x
  3. Step 3: Cross multiply
    1,971,873.89x = 2,721,185.97 × 1,066,455.89
  4. Step 4: Simplify right side
    1,971,873.89x = 2,902,024,805,491.86
  5. Step 5: Solve for x
    x = 2,902,024,805,491.86/1,971,873.89
  6. Step 6: Final answer
    x = 1,471,709.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.