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Finding the Fourth Proportional to 1,278,582.88, 1,764,468.96 and 705,610.76

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Solution

The fourth proportional to 1,278,582.88, 1,764,468.96 and 705,610.76 is: 973,756.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,582.88 : 1,764,468.96 = 705,610.76 : x
  2. Step 2: Convert to fraction form
    1,278,582.88/1,764,468.96 = 705,610.76/x
  3. Step 3: Cross multiply
    1,278,582.88x = 1,764,468.96 × 705,610.76
  4. Step 4: Simplify right side
    1,278,582.88x = 1,245,028,283,862.01
  5. Step 5: Solve for x
    x = 1,245,028,283,862.01/1,278,582.88
  6. Step 6: Final answer
    x = 973,756.42

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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.