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Finding the Fourth Proportional to 391,023.18, 586,544.96 and 124,783.33

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Solution

The fourth proportional to 391,023.18, 586,544.96 and 124,783.33 is: 187,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,023.18 : 586,544.96 = 124,783.33 : x
  2. Step 2: Convert to fraction form
    391,023.18/586,544.96 = 124,783.33/x
  3. Step 3: Cross multiply
    391,023.18x = 586,544.96 × 124,783.33
  4. Step 4: Simplify right side
    391,023.18x = 73,191,032,679.60
  5. Step 5: Solve for x
    x = 73,191,032,679.60/391,023.18
  6. Step 6: Final answer
    x = 187,178.25

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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.