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Finding the Fourth Proportional to 28,907.90, 43,361.85 and 14,911.10

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Solution

The fourth proportional to 28,907.90, 43,361.85 and 14,911.10 is: 22,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.90 : 43,361.85 = 14,911.10 : x
  2. Step 2: Convert to fraction form
    28,907.90/43,361.85 = 14,911.10/x
  3. Step 3: Cross multiply
    28,907.90x = 43,361.85 × 14,911.10
  4. Step 4: Simplify right side
    28,907.90x = 646,572,881.54
  5. Step 5: Solve for x
    x = 646,572,881.54/28,907.90
  6. Step 6: Final answer
    x = 22,366.65

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Similar ratio
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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.