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Finding the Fourth Proportional to 191,937.09, 287,905.65 and 98,383.17

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Solution

The fourth proportional to 191,937.09, 287,905.65 and 98,383.17 is: 147,574.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,937.09 : 287,905.65 = 98,383.17 : x
  2. Step 2: Convert to fraction form
    191,937.09/287,905.65 = 98,383.17/x
  3. Step 3: Cross multiply
    191,937.09x = 287,905.65 × 98,383.17
  4. Step 4: Simplify right side
    191,937.09x = 28,325,070,507.91
  5. Step 5: Solve for x
    x = 28,325,070,507.91/191,937.09
  6. Step 6: Final answer
    x = 147,574.76

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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.