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Finding the Fourth Proportional to 139,364.15, 209,046.22 and 60,476.63

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Solution

The fourth proportional to 139,364.15, 209,046.22 and 60,476.63 is: 90,714.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,364.15 : 209,046.22 = 60,476.63 : x
  2. Step 2: Convert to fraction form
    139,364.15/209,046.22 = 60,476.63/x
  3. Step 3: Cross multiply
    139,364.15x = 209,046.22 × 60,476.63
  4. Step 4: Simplify right side
    139,364.15x = 12,642,409,703.42
  5. Step 5: Solve for x
    x = 12,642,409,703.42/139,364.15
  6. Step 6: Final answer
    x = 90,714.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.