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Finding the Fourth Proportional to 46,900.80, 64,721.12 and 25,679.68

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Solution

The fourth proportional to 46,900.80, 64,721.12 and 25,679.68 is: 35,436.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,900.80 : 64,721.12 = 25,679.68 : x
  2. Step 2: Convert to fraction form
    46,900.80/64,721.12 = 25,679.68/x
  3. Step 3: Cross multiply
    46,900.80x = 64,721.12 × 25,679.68
  4. Step 4: Simplify right side
    46,900.80x = 1,662,017,650.84
  5. Step 5: Solve for x
    x = 1,662,017,650.84/46,900.80
  6. Step 6: Final answer
    x = 35,436.87

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1.5x scale

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.