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Finding the Fourth Proportional to 28,881.90, 43,329.15 and 16,407.90

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Solution

The fourth proportional to 28,881.90, 43,329.15 and 16,407.90 is: 24,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,881.90 : 43,329.15 = 16,407.90 : x
  2. Step 2: Convert to fraction form
    28,881.90/43,329.15 = 16,407.90/x
  3. Step 3: Cross multiply
    28,881.90x = 43,329.15 × 16,407.90
  4. Step 4: Simplify right side
    28,881.90x = 710,940,360.29
  5. Step 5: Solve for x
    x = 710,940,360.29/28,881.90
  6. Step 6: Final answer
    x = 24,615.43

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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.