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Finding the Fourth Proportional to 500,661.90, 750,986.37 and 121,585.74

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Solution

The fourth proportional to 500,661.90, 750,986.37 and 121,585.74 is: 182,377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,661.90 : 750,986.37 = 121,585.74 : x
  2. Step 2: Convert to fraction form
    500,661.90/750,986.37 = 121,585.74/x
  3. Step 3: Cross multiply
    500,661.90x = 750,986.37 × 121,585.74
  4. Step 4: Simplify right side
    500,661.90x = 91,309,233,526.36
  5. Step 5: Solve for x
    x = 91,309,233,526.36/500,661.90
  6. Step 6: Final answer
    x = 182,377.04

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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.