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Finding the Fourth Proportional to 127,967.79, 191,988.58 and 39,234.39

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Solution

The fourth proportional to 127,967.79, 191,988.58 and 39,234.39 is: 58,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.79 : 191,988.58 = 39,234.39 : x
  2. Step 2: Convert to fraction form
    127,967.79/191,988.58 = 39,234.39/x
  3. Step 3: Cross multiply
    127,967.79x = 191,988.58 × 39,234.39
  4. Step 4: Simplify right side
    127,967.79x = 7,532,554,823.27
  5. Step 5: Solve for x
    x = 7,532,554,823.27/127,967.79
  6. Step 6: Final answer
    x = 58,862.90

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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.