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Finding the Fourth Proportional to 73,133.64, 100,973.28 and 68,110.80

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Solution

The fourth proportional to 73,133.64, 100,973.28 and 68,110.80 is: 94,038.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,133.64 : 100,973.28 = 68,110.80 : x
  2. Step 2: Convert to fraction form
    73,133.64/100,973.28 = 68,110.80/x
  3. Step 3: Cross multiply
    73,133.64x = 100,973.28 × 68,110.80
  4. Step 4: Simplify right side
    73,133.64x = 6,877,370,879.42
  5. Step 5: Solve for x
    x = 6,877,370,879.42/73,133.64
  6. Step 6: Final answer
    x = 94,038.41

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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.