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Finding the Fourth Proportional to 191,855.39, 287,809.34 and 65,461.64

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Solution

The fourth proportional to 191,855.39, 287,809.34 and 65,461.64 is: 98,201.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,855.39 : 287,809.34 = 65,461.64 : x
  2. Step 2: Convert to fraction form
    191,855.39/287,809.34 = 65,461.64/x
  3. Step 3: Cross multiply
    191,855.39x = 287,809.34 × 65,461.64
  4. Step 4: Simplify right side
    191,855.39x = 18,840,469,637.36
  5. Step 5: Solve for x
    x = 18,840,469,637.36/191,855.39
  6. Step 6: Final answer
    x = 98,201.41

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1.5x scale

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.