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Finding the Fourth Proportional to 127,979.96, 191,970.96 and 83,885.94

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Solution

The fourth proportional to 127,979.96, 191,970.96 and 83,885.94 is: 125,829.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,979.96 : 191,970.96 = 83,885.94 : x
  2. Step 2: Convert to fraction form
    127,979.96/191,970.96 = 83,885.94/x
  3. Step 3: Cross multiply
    127,979.96x = 191,970.96 × 83,885.94
  4. Step 4: Simplify right side
    127,979.96x = 16,103,664,432.30
  5. Step 5: Solve for x
    x = 16,103,664,432.30/127,979.96
  6. Step 6: Final answer
    x = 125,829.58

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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.