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Finding the Fourth Proportional to 28,410.76, 42,616.50 and 10,881.64

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Solution

The fourth proportional to 28,410.76, 42,616.50 and 10,881.64 is: 16,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.76 : 42,616.50 = 10,881.64 : x
  2. Step 2: Convert to fraction form
    28,410.76/42,616.50 = 10,881.64/x
  3. Step 3: Cross multiply
    28,410.76x = 42,616.50 × 10,881.64
  4. Step 4: Simplify right side
    28,410.76x = 463,737,411.06
  5. Step 5: Solve for x
    x = 463,737,411.06/28,410.76
  6. Step 6: Final answer
    x = 16,322.60

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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.