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Finding the Fourth Proportional to 163,978.16, 226,291.12 and 92,351.48

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Solution

The fourth proportional to 163,978.16, 226,291.12 and 92,351.48 is: 127,445.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,978.16 : 226,291.12 = 92,351.48 : x
  2. Step 2: Convert to fraction form
    163,978.16/226,291.12 = 92,351.48/x
  3. Step 3: Cross multiply
    163,978.16x = 226,291.12 × 92,351.48
  4. Step 4: Simplify right side
    163,978.16x = 20,898,318,480.52
  5. Step 5: Solve for x
    x = 20,898,318,480.52/163,978.16
  6. Step 6: Final answer
    x = 127,445.75

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1.5x scale

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.