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Finding the Fourth Proportional to 171,363.68, 236,807.19 and 128,848.40

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Solution

The fourth proportional to 171,363.68, 236,807.19 and 128,848.40 is: 178,055.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,363.68 : 236,807.19 = 128,848.40 : x
  2. Step 2: Convert to fraction form
    171,363.68/236,807.19 = 128,848.40/x
  3. Step 3: Cross multiply
    171,363.68x = 236,807.19 × 128,848.40
  4. Step 4: Simplify right side
    171,363.68x = 30,512,227,540.00
  5. Step 5: Solve for x
    x = 30,512,227,540.00/171,363.68
  6. Step 6: Final answer
    x = 178,055.39

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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.