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Finding the Fourth Proportional to 86,248.99, 118,940.16 and 56,042.47

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Solution

The fourth proportional to 86,248.99, 118,940.16 and 56,042.47 is: 77,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,248.99 : 118,940.16 = 56,042.47 : x
  2. Step 2: Convert to fraction form
    86,248.99/118,940.16 = 56,042.47/x
  3. Step 3: Cross multiply
    86,248.99x = 118,940.16 × 56,042.47
  4. Step 4: Simplify right side
    86,248.99x = 6,665,700,348.60
  5. Step 5: Solve for x
    x = 6,665,700,348.60/86,248.99
  6. Step 6: Final answer
    x = 77,284.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.