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Finding the Fourth Proportional to 235,690.88, 353,461.12 and 77,889.92

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Solution

The fourth proportional to 235,690.88, 353,461.12 and 77,889.92 is: 116,810.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,690.88 : 353,461.12 = 77,889.92 : x
  2. Step 2: Convert to fraction form
    235,690.88/353,461.12 = 77,889.92/x
  3. Step 3: Cross multiply
    235,690.88x = 353,461.12 × 77,889.92
  4. Step 4: Simplify right side
    235,690.88x = 27,531,058,359.91
  5. Step 5: Solve for x
    x = 27,531,058,359.91/235,690.88
  6. Step 6: Final answer
    x = 116,810.03

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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.