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Finding the Fourth Proportional to 46,920.80, 64,750.92 and 25,700

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Solution

The fourth proportional to 46,920.80, 64,750.92 and 25,700 is: 35,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,920.80 : 64,750.92 = 25,700 : x
  2. Step 2: Convert to fraction form
    46,920.80/64,750.92 = 25,700/x
  3. Step 3: Cross multiply
    46,920.80x = 64,750.92 × 25,700
  4. Step 4: Simplify right side
    46,920.80x = 1,664,098,644
  5. Step 5: Solve for x
    x = 1,664,098,644/46,920.80
  6. Step 6: Final answer
    x = 35,466.12

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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.