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Finding the Fourth Proportional to 191,616.56, 287,426.52 and 66,957.84

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Solution

The fourth proportional to 191,616.56, 287,426.52 and 66,957.84 is: 100,437.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,616.56 : 287,426.52 = 66,957.84 : x
  2. Step 2: Convert to fraction form
    191,616.56/287,426.52 = 66,957.84/x
  3. Step 3: Cross multiply
    191,616.56x = 287,426.52 × 66,957.84
  4. Step 4: Simplify right side
    191,616.56x = 19,245,458,937.92
  5. Step 5: Solve for x
    x = 19,245,458,937.92/191,616.56
  6. Step 6: Final answer
    x = 100,437.35

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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.