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Finding the Fourth Proportional to 876,561.80, 1,314,842.70 and 561,633.80

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Solution

The fourth proportional to 876,561.80, 1,314,842.70 and 561,633.80 is: 842,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,561.80 : 1,314,842.70 = 561,633.80 : x
  2. Step 2: Convert to fraction form
    876,561.80/1,314,842.70 = 561,633.80/x
  3. Step 3: Cross multiply
    876,561.80x = 1,314,842.70 × 561,633.80
  4. Step 4: Simplify right side
    876,561.80x = 738,460,102,003.26
  5. Step 5: Solve for x
    x = 738,460,102,003.26/876,561.80
  6. Step 6: Final answer
    x = 842,450.70

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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.