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Finding the Fourth Proportional to 171,312.78, 236,412.18 and 92,730.72

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Solution

The fourth proportional to 171,312.78, 236,412.18 and 92,730.72 is: 127,968.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,312.78 : 236,412.18 = 92,730.72 : x
  2. Step 2: Convert to fraction form
    171,312.78/236,412.18 = 92,730.72/x
  3. Step 3: Cross multiply
    171,312.78x = 236,412.18 × 92,730.72
  4. Step 4: Simplify right side
    171,312.78x = 21,922,671,668.17
  5. Step 5: Solve for x
    x = 21,922,671,668.17/171,312.78
  6. Step 6: Final answer
    x = 127,968.69

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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.