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Finding the Fourth Proportional to 84,707.69, 127,062.52 and 25,543.87

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Solution

The fourth proportional to 84,707.69, 127,062.52 and 25,543.87 is: 38,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,707.69 : 127,062.52 = 25,543.87 : x
  2. Step 2: Convert to fraction form
    84,707.69/127,062.52 = 25,543.87/x
  3. Step 3: Cross multiply
    84,707.69x = 127,062.52 × 25,543.87
  4. Step 4: Simplify right side
    84,707.69x = 3,245,668,111.24
  5. Step 5: Solve for x
    x = 3,245,668,111.24/84,707.69
  6. Step 6: Final answer
    x = 38,316.10

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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.