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Finding the Fourth Proportional to 876,361.65, 1,306,810.65 and 845,139.49

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Solution

The fourth proportional to 876,361.65, 1,306,810.65 and 845,139.49 is: 1,260,252.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,361.65 : 1,306,810.65 = 845,139.49 : x
  2. Step 2: Convert to fraction form
    876,361.65/1,306,810.65 = 845,139.49/x
  3. Step 3: Cross multiply
    876,361.65x = 1,306,810.65 × 845,139.49
  4. Step 4: Simplify right side
    876,361.65x = 1,104,437,286,267.57
  5. Step 5: Solve for x
    x = 1,104,437,286,267.57/876,361.65
  6. Step 6: Final answer
    x = 1,260,252.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.