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Finding the Fourth Proportional to 127,998.85, 176,642.66 and 69,858.76

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Solution

The fourth proportional to 127,998.85, 176,642.66 and 69,858.76 is: 96,407.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,998.85 : 176,642.66 = 69,858.76 : x
  2. Step 2: Convert to fraction form
    127,998.85/176,642.66 = 69,858.76/x
  3. Step 3: Cross multiply
    127,998.85x = 176,642.66 × 69,858.76
  4. Step 4: Simplify right side
    127,998.85x = 12,340,037,190.70
  5. Step 5: Solve for x
    x = 12,340,037,190.70/127,998.85
  6. Step 6: Final answer
    x = 96,407.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.