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Finding the Fourth Proportional to 347,708.86, 521,563.30 and 189,851.20

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Solution

The fourth proportional to 347,708.86, 521,563.30 and 189,851.20 is: 284,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,708.86 : 521,563.30 = 189,851.20 : x
  2. Step 2: Convert to fraction form
    347,708.86/521,563.30 = 189,851.20/x
  3. Step 3: Cross multiply
    347,708.86x = 521,563.30 × 189,851.20
  4. Step 4: Simplify right side
    347,708.86x = 99,019,416,602.42
  5. Step 5: Solve for x
    x = 99,019,416,602.42/347,708.86
  6. Step 6: Final answer
    x = 284,776.80

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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.