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Finding the Fourth Proportional to 191,969.06, 287,920.78 and 51,694.88

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Solution

The fourth proportional to 191,969.06, 287,920.78 and 51,694.88 is: 77,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,969.06 : 287,920.78 = 51,694.88 : x
  2. Step 2: Convert to fraction form
    191,969.06/287,920.78 = 51,694.88/x
  3. Step 3: Cross multiply
    191,969.06x = 287,920.78 × 51,694.88
  4. Step 4: Simplify right side
    191,969.06x = 14,884,028,602.77
  5. Step 5: Solve for x
    x = 14,884,028,602.77/191,969.06
  6. Step 6: Final answer
    x = 77,533.48

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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.