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Finding the Fourth Proportional to 250,402.13, 375,978.36 and 216,771.85

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Solution

The fourth proportional to 250,402.13, 375,978.36 and 216,771.85 is: 325,482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,402.13 : 375,978.36 = 216,771.85 : x
  2. Step 2: Convert to fraction form
    250,402.13/375,978.36 = 216,771.85/x
  3. Step 3: Cross multiply
    250,402.13x = 375,978.36 × 216,771.85
  4. Step 4: Simplify right side
    250,402.13x = 81,501,522,605.81
  5. Step 5: Solve for x
    x = 81,501,522,605.81/250,402.13
  6. Step 6: Final answer
    x = 325,482.54

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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.