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Finding the Fourth Proportional to 127,956.80, 191,935.20 and 98,432.30

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Solution

The fourth proportional to 127,956.80, 191,935.20 and 98,432.30 is: 147,648.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,956.80 : 191,935.20 = 98,432.30 : x
  2. Step 2: Convert to fraction form
    127,956.80/191,935.20 = 98,432.30/x
  3. Step 3: Cross multiply
    127,956.80x = 191,935.20 × 98,432.30
  4. Step 4: Simplify right side
    127,956.80x = 18,892,623,186.96
  5. Step 5: Solve for x
    x = 18,892,623,186.96/127,956.80
  6. Step 6: Final answer
    x = 147,648.45

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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.