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Finding the Fourth Proportional to 127,892.80, 191,925.60 and 83,411.20

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Solution

The fourth proportional to 127,892.80, 191,925.60 and 83,411.20 is: 125,173.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,892.80 : 191,925.60 = 83,411.20 : x
  2. Step 2: Convert to fraction form
    127,892.80/191,925.60 = 83,411.20/x
  3. Step 3: Cross multiply
    127,892.80x = 191,925.60 × 83,411.20
  4. Step 4: Simplify right side
    127,892.80x = 16,008,744,606.72
  5. Step 5: Solve for x
    x = 16,008,744,606.72/127,892.80
  6. Step 6: Final answer
    x = 125,173.15

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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.