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Finding the Fourth Proportional to 139,191.90, 208,718.64 and 44,409.66

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Solution

The fourth proportional to 139,191.90, 208,718.64 and 44,409.66 is: 66,592.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,191.90 : 208,718.64 = 44,409.66 : x
  2. Step 2: Convert to fraction form
    139,191.90/208,718.64 = 44,409.66/x
  3. Step 3: Cross multiply
    139,191.90x = 208,718.64 × 44,409.66
  4. Step 4: Simplify right side
    139,191.90x = 9,269,123,838.06
  5. Step 5: Solve for x
    x = 9,269,123,838.06/139,191.90
  6. Step 6: Final answer
    x = 66,592.41

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1.5x scale

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.