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Finding the Fourth Proportional to 1,892,868.80, 2,840,080.80 and 695,364.80

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Solution

The fourth proportional to 1,892,868.80, 2,840,080.80 and 695,364.80 is: 1,043,332.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892,868.80 : 2,840,080.80 = 695,364.80 : x
  2. Step 2: Convert to fraction form
    1,892,868.80/2,840,080.80 = 695,364.80/x
  3. Step 3: Cross multiply
    1,892,868.80x = 2,840,080.80 × 695,364.80
  4. Step 4: Simplify right side
    1,892,868.80x = 1,974,892,217,475.84
  5. Step 5: Solve for x
    x = 1,974,892,217,475.84/1,892,868.80
  6. Step 6: Final answer
    x = 1,043,332.86

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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.