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Finding the Fourth Proportional to 127,717.56, 191,575.80 and 38,970.77

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Solution

The fourth proportional to 127,717.56, 191,575.80 and 38,970.77 is: 58,455.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,717.56 : 191,575.80 = 38,970.77 : x
  2. Step 2: Convert to fraction form
    127,717.56/191,575.80 = 38,970.77/x
  3. Step 3: Cross multiply
    127,717.56x = 191,575.80 × 38,970.77
  4. Step 4: Simplify right side
    127,717.56x = 7,465,855,481.49
  5. Step 5: Solve for x
    x = 7,465,855,481.49/127,717.56
  6. Step 6: Final answer
    x = 58,455.98

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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.