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Finding the Fourth Proportional to 28,593.76, 42,916.80 and 14,563.52

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Solution

The fourth proportional to 28,593.76, 42,916.80 and 14,563.52 is: 21,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.76 : 42,916.80 = 14,563.52 : x
  2. Step 2: Convert to fraction form
    28,593.76/42,916.80 = 14,563.52/x
  3. Step 3: Cross multiply
    28,593.76x = 42,916.80 × 14,563.52
  4. Step 4: Simplify right side
    28,593.76x = 625,019,675.14
  5. Step 5: Solve for x
    x = 625,019,675.14/28,593.76
  6. Step 6: Final answer
    x = 21,858.60

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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.