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Finding the Fourth Proportional to 172,431.51, 237,953.16 and 96,980.01

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Solution

The fourth proportional to 172,431.51, 237,953.16 and 96,980.01 is: 133,831.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,431.51 : 237,953.16 = 96,980.01 : x
  2. Step 2: Convert to fraction form
    172,431.51/237,953.16 = 96,980.01/x
  3. Step 3: Cross multiply
    172,431.51x = 237,953.16 × 96,980.01
  4. Step 4: Simplify right side
    172,431.51x = 23,076,699,836.33
  5. Step 5: Solve for x
    x = 23,076,699,836.33/172,431.51
  6. Step 6: Final answer
    x = 133,831.11

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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.