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Finding the Fourth Proportional to 15,673.68, 23,498.88 and 8,656.80

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Solution

The fourth proportional to 15,673.68, 23,498.88 and 8,656.80 is: 12,978.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.68 : 23,498.88 = 8,656.80 : x
  2. Step 2: Convert to fraction form
    15,673.68/23,498.88 = 8,656.80/x
  3. Step 3: Cross multiply
    15,673.68x = 23,498.88 × 8,656.80
  4. Step 4: Simplify right side
    15,673.68x = 203,425,104.38
  5. Step 5: Solve for x
    x = 203,425,104.38/15,673.68
  6. Step 6: Final answer
    x = 12,978.77

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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.