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Finding the Fourth Proportional to 171,490.66, 236,614.36 and 98,915.74

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Solution

The fourth proportional to 171,490.66, 236,614.36 and 98,915.74 is: 136,479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,490.66 : 236,614.36 = 98,915.74 : x
  2. Step 2: Convert to fraction form
    171,490.66/236,614.36 = 98,915.74/x
  3. Step 3: Cross multiply
    171,490.66x = 236,614.36 × 98,915.74
  4. Step 4: Simplify right side
    171,490.66x = 23,404,884,514.03
  5. Step 5: Solve for x
    x = 23,404,884,514.03/171,490.66
  6. Step 6: Final answer
    x = 136,479.06

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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.