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Finding the Fourth Proportional to 139,463.76, 192,460.26 and 75,801.40

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Solution

The fourth proportional to 139,463.76, 192,460.26 and 75,801.40 is: 104,606.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,463.76 : 192,460.26 = 75,801.40 : x
  2. Step 2: Convert to fraction form
    139,463.76/192,460.26 = 75,801.40/x
  3. Step 3: Cross multiply
    139,463.76x = 192,460.26 × 75,801.40
  4. Step 4: Simplify right side
    139,463.76x = 14,588,757,152.36
  5. Step 5: Solve for x
    x = 14,588,757,152.36/139,463.76
  6. Step 6: Final answer
    x = 104,606.08

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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.