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Finding the Fourth Proportional to 171,565.51, 236,756.36 and 99,940.91

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Solution

The fourth proportional to 171,565.51, 236,756.36 and 99,940.91 is: 137,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,565.51 : 236,756.36 = 99,940.91 : x
  2. Step 2: Convert to fraction form
    171,565.51/236,756.36 = 99,940.91/x
  3. Step 3: Cross multiply
    171,565.51x = 236,756.36 × 99,940.91
  4. Step 4: Simplify right side
    171,565.51x = 23,661,645,132.76
  5. Step 5: Solve for x
    x = 23,661,645,132.76/171,565.51
  6. Step 6: Final answer
    x = 137,916.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.