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Finding the Fourth Proportional to 28,875.63, 39,849.03 and 16,947.57

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Solution

The fourth proportional to 28,875.63, 39,849.03 and 16,947.57 is: 23,388.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.63 : 39,849.03 = 16,947.57 : x
  2. Step 2: Convert to fraction form
    28,875.63/39,849.03 = 16,947.57/x
  3. Step 3: Cross multiply
    28,875.63x = 39,849.03 × 16,947.57
  4. Step 4: Simplify right side
    28,875.63x = 675,344,225.36
  5. Step 5: Solve for x
    x = 675,344,225.36/28,875.63
  6. Step 6: Final answer
    x = 23,388.03

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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.