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Finding the Fourth Proportional to 452,577.92, 678,866.86 and 115,619.31

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Solution

The fourth proportional to 452,577.92, 678,866.86 and 115,619.31 is: 173,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,577.92 : 678,866.86 = 115,619.31 : x
  2. Step 2: Convert to fraction form
    452,577.92/678,866.86 = 115,619.31/x
  3. Step 3: Cross multiply
    452,577.92x = 678,866.86 × 115,619.31
  4. Step 4: Simplify right side
    452,577.92x = 78,490,117,935.07
  5. Step 5: Solve for x
    x = 78,490,117,935.07/452,577.92
  6. Step 6: Final answer
    x = 173,428.96

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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.