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Finding the Fourth Proportional to 456,825.80, 685,281.90 and 124,401.80

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Solution

The fourth proportional to 456,825.80, 685,281.90 and 124,401.80 is: 186,614.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,825.80 : 685,281.90 = 124,401.80 : x
  2. Step 2: Convert to fraction form
    456,825.80/685,281.90 = 124,401.80/x
  3. Step 3: Cross multiply
    456,825.80x = 685,281.90 × 124,401.80
  4. Step 4: Simplify right side
    456,825.80x = 85,250,301,867.42
  5. Step 5: Solve for x
    x = 85,250,301,867.42/456,825.80
  6. Step 6: Final answer
    x = 186,614.46

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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.