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Finding the Fourth Proportional to 92,940.78, 140,111.43 and 86,927.34

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Solution

The fourth proportional to 92,940.78, 140,111.43 and 86,927.34 is: 131,045.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,940.78 : 140,111.43 = 86,927.34 : x
  2. Step 2: Convert to fraction form
    92,940.78/140,111.43 = 86,927.34/x
  3. Step 3: Cross multiply
    92,940.78x = 140,111.43 × 86,927.34
  4. Step 4: Simplify right side
    92,940.78x = 12,179,513,913.50
  5. Step 5: Solve for x
    x = 12,179,513,913.50/92,940.78
  6. Step 6: Final answer
    x = 131,045.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.