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Finding the Fourth Proportional to 561,194.20, 841,915.69 and 161,803.82

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Solution

The fourth proportional to 561,194.20, 841,915.69 and 161,803.82 is: 242,741.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,194.20 : 841,915.69 = 161,803.82 : x
  2. Step 2: Convert to fraction form
    561,194.20/841,915.69 = 161,803.82/x
  3. Step 3: Cross multiply
    561,194.20x = 841,915.69 × 161,803.82
  4. Step 4: Simplify right side
    561,194.20x = 136,225,174,759.94
  5. Step 5: Solve for x
    x = 136,225,174,759.94/561,194.20
  6. Step 6: Final answer
    x = 242,741.59

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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.