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Finding the Fourth Proportional to 46,924.80, 64,740.72 and 28,768.80

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Solution

The fourth proportional to 46,924.80, 64,740.72 and 28,768.80 is: 39,691.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,924.80 : 64,740.72 = 28,768.80 : x
  2. Step 2: Convert to fraction form
    46,924.80/64,740.72 = 28,768.80/x
  3. Step 3: Cross multiply
    46,924.80x = 64,740.72 × 28,768.80
  4. Step 4: Simplify right side
    46,924.80x = 1,862,512,825.54
  5. Step 5: Solve for x
    x = 1,862,512,825.54/46,924.80
  6. Step 6: Final answer
    x = 39,691.44

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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.