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Finding the Fourth Proportional to 26,907.84, 40,362.48 and 12,869.52

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Solution

The fourth proportional to 26,907.84, 40,362.48 and 12,869.52 is: 19,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,907.84 : 40,362.48 = 12,869.52 : x
  2. Step 2: Convert to fraction form
    26,907.84/40,362.48 = 12,869.52/x
  3. Step 3: Cross multiply
    26,907.84x = 40,362.48 × 12,869.52
  4. Step 4: Simplify right side
    26,907.84x = 519,445,743.61
  5. Step 5: Solve for x
    x = 519,445,743.61/26,907.84
  6. Step 6: Final answer
    x = 19,304.62

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1.5x scale

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.