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Finding the Fourth Proportional to 86,187,636.80, 129,344,440.80 and 60,678,468.80

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Solution

The fourth proportional to 86,187,636.80, 129,344,440.80 and 60,678,468.80 is: 91,062,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,187,636.80 : 129,344,440.80 = 60,678,468.80 : x
  2. Step 2: Convert to fraction form
    86,187,636.80/129,344,440.80 = 60,678,468.80/x
  3. Step 3: Cross multiply
    86,187,636.80x = 129,344,440.80 × 60,678,468.80
  4. Step 4: Simplify right side
    86,187,636.80x = 7,848,422,615,536,246
  5. Step 5: Solve for x
    x = 7,848,422,615,536,246/86,187,636.80
  6. Step 6: Final answer
    x = 91,062,046.80

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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.