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Finding the Fourth Proportional to 28,251.60, 42,312.60 and 16,587.60

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Solution

The fourth proportional to 28,251.60, 42,312.60 and 16,587.60 is: 24,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.60 : 42,312.60 = 16,587.60 : x
  2. Step 2: Convert to fraction form
    28,251.60/42,312.60 = 16,587.60/x
  3. Step 3: Cross multiply
    28,251.60x = 42,312.60 × 16,587.60
  4. Step 4: Simplify right side
    28,251.60x = 701,864,483.76
  5. Step 5: Solve for x
    x = 701,864,483.76/28,251.60
  6. Step 6: Final answer
    x = 24,843.35

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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.