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Finding the Fourth Proportional to 172,364.44, 258,393.12 and 67,159.48

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Solution

The fourth proportional to 172,364.44, 258,393.12 and 67,159.48 is: 100,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,364.44 : 258,393.12 = 67,159.48 : x
  2. Step 2: Convert to fraction form
    172,364.44/258,393.12 = 67,159.48/x
  3. Step 3: Cross multiply
    172,364.44x = 258,393.12 × 67,159.48
  4. Step 4: Simplify right side
    172,364.44x = 17,353,547,574.78
  5. Step 5: Solve for x
    x = 17,353,547,574.78/172,364.44
  6. Step 6: Final answer
    x = 100,679.40

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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.