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Finding the Fourth Proportional to 1,278,829.97, 1,764,785.51 and 705,870.30

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Solution

The fourth proportional to 1,278,829.97, 1,764,785.51 and 705,870.30 is: 974,101.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,829.97 : 1,764,785.51 = 705,870.30 : x
  2. Step 2: Convert to fraction form
    1,278,829.97/1,764,785.51 = 705,870.30/x
  3. Step 3: Cross multiply
    1,278,829.97x = 1,764,785.51 × 705,870.30
  4. Step 4: Simplify right side
    1,278,829.97x = 1,245,709,677,379.35
  5. Step 5: Solve for x
    x = 1,245,709,677,379.35/1,278,829.97
  6. Step 6: Final answer
    x = 974,101.10

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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.