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Finding the Fourth Proportional to 561,670.19, 842,505.28 and 187,693.19

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Solution

The fourth proportional to 561,670.19, 842,505.28 and 187,693.19 is: 281,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,670.19 : 842,505.28 = 187,693.19 : x
  2. Step 2: Convert to fraction form
    561,670.19/842,505.28 = 187,693.19/x
  3. Step 3: Cross multiply
    561,670.19x = 842,505.28 × 187,693.19
  4. Step 4: Simplify right side
    561,670.19x = 158,132,503,595.04
  5. Step 5: Solve for x
    x = 158,132,503,595.04/561,670.19
  6. Step 6: Final answer
    x = 281,539.78

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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.