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Finding the Fourth Proportional to 139,757.02, 209,668.29 and 46,262.74

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Solution

The fourth proportional to 139,757.02, 209,668.29 and 46,262.74 is: 69,404.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,757.02 : 209,668.29 = 46,262.74 : x
  2. Step 2: Convert to fraction form
    139,757.02/209,668.29 = 46,262.74/x
  3. Step 3: Cross multiply
    139,757.02x = 209,668.29 × 46,262.74
  4. Step 4: Simplify right side
    139,757.02x = 9,699,829,586.51
  5. Step 5: Solve for x
    x = 9,699,829,586.51/139,757.02
  6. Step 6: Final answer
    x = 69,404.95

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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.