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Finding the Fourth Proportional to 139,758.75, 209,670.93 and 46,264.50

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Solution

The fourth proportional to 139,758.75, 209,670.93 and 46,264.50 is: 69,407.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,758.75 : 209,670.93 = 46,264.50 : x
  2. Step 2: Convert to fraction form
    139,758.75/209,670.93 = 46,264.50/x
  3. Step 3: Cross multiply
    139,758.75x = 209,670.93 × 46,264.50
  4. Step 4: Simplify right side
    139,758.75x = 9,700,320,740.99
  5. Step 5: Solve for x
    x = 9,700,320,740.99/139,758.75
  6. Step 6: Final answer
    x = 69,407.61

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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.