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Finding the Fourth Proportional to 611,670.57, 917,505.87 and 190,982.49

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Solution

The fourth proportional to 611,670.57, 917,505.87 and 190,982.49 is: 286,473.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,670.57 : 917,505.87 = 190,982.49 : x
  2. Step 2: Convert to fraction form
    611,670.57/917,505.87 = 190,982.49/x
  3. Step 3: Cross multiply
    611,670.57x = 917,505.87 × 190,982.49
  4. Step 4: Simplify right side
    611,670.57x = 175,227,555,642.22
  5. Step 5: Solve for x
    x = 175,227,555,642.22/611,670.57
  6. Step 6: Final answer
    x = 286,473.74

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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.