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Finding the Fourth Proportional to 139,360.76, 192,314.66 and 75,697.16

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Solution

The fourth proportional to 139,360.76, 192,314.66 and 75,697.16 is: 104,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,360.76 : 192,314.66 = 75,697.16 : x
  2. Step 2: Convert to fraction form
    139,360.76/192,314.66 = 75,697.16/x
  3. Step 3: Cross multiply
    139,360.76x = 192,314.66 × 75,697.16
  4. Step 4: Simplify right side
    139,360.76x = 14,557,673,588.37
  5. Step 5: Solve for x
    x = 14,557,673,588.37/139,360.76
  6. Step 6: Final answer
    x = 104,460.35

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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.