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Finding the Fourth Proportional to 661,642.56, 992,314.80 and 188,317.44

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Solution

The fourth proportional to 661,642.56, 992,314.80 and 188,317.44 is: 282,433.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,642.56 : 992,314.80 = 188,317.44 : x
  2. Step 2: Convert to fraction form
    661,642.56/992,314.80 = 188,317.44/x
  3. Step 3: Cross multiply
    661,642.56x = 992,314.80 × 188,317.44
  4. Step 4: Simplify right side
    661,642.56x = 186,870,182,810.11
  5. Step 5: Solve for x
    x = 186,870,182,810.11/661,642.56
  6. Step 6: Final answer
    x = 282,433.74

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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.