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Finding the Fourth Proportional to 126,649.80, 174,925.44 and 101,244.15

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Solution

The fourth proportional to 126,649.80, 174,925.44 and 101,244.15 is: 139,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,649.80 : 174,925.44 = 101,244.15 : x
  2. Step 2: Convert to fraction form
    126,649.80/174,925.44 = 101,244.15/x
  3. Step 3: Cross multiply
    126,649.80x = 174,925.44 × 101,244.15
  4. Step 4: Simplify right side
    126,649.80x = 17,710,177,486.18
  5. Step 5: Solve for x
    x = 17,710,177,486.18/126,649.80
  6. Step 6: Final answer
    x = 139,835.81

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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.