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Finding the Fourth Proportional to 185,538.72, 256,021.80 and 103,871.40

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Solution

The fourth proportional to 185,538.72, 256,021.80 and 103,871.40 is: 143,330.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,538.72 : 256,021.80 = 103,871.40 : x
  2. Step 2: Convert to fraction form
    185,538.72/256,021.80 = 103,871.40/x
  3. Step 3: Cross multiply
    185,538.72x = 256,021.80 × 103,871.40
  4. Step 4: Simplify right side
    185,538.72x = 26,593,342,796.52
  5. Step 5: Solve for x
    x = 26,593,342,796.52/185,538.72
  6. Step 6: Final answer
    x = 143,330.42

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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.