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Finding the Fourth Proportional to 1,976,904.17, 2,965,421.56 and 680,043.54

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Solution

The fourth proportional to 1,976,904.17, 2,965,421.56 and 680,043.54 is: 1,020,087.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976,904.17 : 2,965,421.56 = 680,043.54 : x
  2. Step 2: Convert to fraction form
    1,976,904.17/2,965,421.56 = 680,043.54/x
  3. Step 3: Cross multiply
    1,976,904.17x = 2,965,421.56 × 680,043.54
  4. Step 4: Simplify right side
    1,976,904.17x = 2,016,615,771,854.51
  5. Step 5: Solve for x
    x = 2,016,615,771,854.51/1,976,904.17
  6. Step 6: Final answer
    x = 1,020,087.78

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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.