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Finding the Fourth Proportional to 561,509.76, 841,759.18 and 206,447.88

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Solution

The fourth proportional to 561,509.76, 841,759.18 and 206,447.88 is: 309,485.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,509.76 : 841,759.18 = 206,447.88 : x
  2. Step 2: Convert to fraction form
    561,509.76/841,759.18 = 206,447.88/x
  3. Step 3: Cross multiply
    561,509.76x = 841,759.18 × 206,447.88
  4. Step 4: Simplify right side
    561,509.76x = 173,779,398,181.54
  5. Step 5: Solve for x
    x = 173,779,398,181.54/561,509.76
  6. Step 6: Final answer
    x = 309,485.98

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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.