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Finding the Fourth Proportional to 46,874.80, 64,668.72 and 28,938.68

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Solution

The fourth proportional to 46,874.80, 64,668.72 and 28,938.68 is: 39,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,874.80 : 64,668.72 = 28,938.68 : x
  2. Step 2: Convert to fraction form
    46,874.80/64,668.72 = 28,938.68/x
  3. Step 3: Cross multiply
    46,874.80x = 64,668.72 × 28,938.68
  4. Step 4: Simplify right side
    46,874.80x = 1,871,427,394.09
  5. Step 5: Solve for x
    x = 1,871,427,394.09/46,874.80
  6. Step 6: Final answer
    x = 39,923.95

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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.