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Finding the Fourth Proportional to 170,970.90, 256,456.35 and 92,238.90

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Solution

The fourth proportional to 170,970.90, 256,456.35 and 92,238.90 is: 138,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,970.90 : 256,456.35 = 92,238.90 : x
  2. Step 2: Convert to fraction form
    170,970.90/256,456.35 = 92,238.90/x
  3. Step 3: Cross multiply
    170,970.90x = 256,456.35 × 92,238.90
  4. Step 4: Simplify right side
    170,970.90x = 23,655,251,622.02
  5. Step 5: Solve for x
    x = 23,655,251,622.02/170,970.90
  6. Step 6: Final answer
    x = 138,358.35

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1.5x scale

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.