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Finding the Fourth Proportional to 127,953.80, 191,685.90 and 68,769.80

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Solution

The fourth proportional to 127,953.80, 191,685.90 and 68,769.80 is: 103,023.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,953.80 : 191,685.90 = 68,769.80 : x
  2. Step 2: Convert to fraction form
    127,953.80/191,685.90 = 68,769.80/x
  3. Step 3: Cross multiply
    127,953.80x = 191,685.90 × 68,769.80
  4. Step 4: Simplify right side
    127,953.80x = 13,182,201,005.82
  5. Step 5: Solve for x
    x = 13,182,201,005.82/127,953.80
  6. Step 6: Final answer
    x = 103,023.13

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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.