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Finding the Fourth Proportional to 561,440.57, 841,910.71 and 161,986.38

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Solution

The fourth proportional to 561,440.57, 841,910.71 and 161,986.38 is: 242,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,440.57 : 841,910.71 = 161,986.38 : x
  2. Step 2: Convert to fraction form
    561,440.57/841,910.71 = 161,986.38/x
  3. Step 3: Cross multiply
    561,440.57x = 841,910.71 × 161,986.38
  4. Step 4: Simplify right side
    561,440.57x = 136,378,069,673.47
  5. Step 5: Solve for x
    x = 136,378,069,673.47/561,440.57
  6. Step 6: Final answer
    x = 242,907.40

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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.