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Finding the Fourth Proportional to 191,116.80, 285,062.67 and 165,959.01

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Solution

The fourth proportional to 191,116.80, 285,062.67 and 165,959.01 is: 247,538.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,116.80 : 285,062.67 = 165,959.01 : x
  2. Step 2: Convert to fraction form
    191,116.80/285,062.67 = 165,959.01/x
  3. Step 3: Cross multiply
    191,116.80x = 285,062.67 × 165,959.01
  4. Step 4: Simplify right side
    191,116.80x = 47,308,718,501.16
  5. Step 5: Solve for x
    x = 47,308,718,501.16/191,116.80
  6. Step 6: Final answer
    x = 247,538.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.