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Finding the Fourth Proportional to 15,875.88, 21,910.88 and 12,093.72

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Solution

The fourth proportional to 15,875.88, 21,910.88 and 12,093.72 is: 16,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.88 : 21,910.88 = 12,093.72 : x
  2. Step 2: Convert to fraction form
    15,875.88/21,910.88 = 12,093.72/x
  3. Step 3: Cross multiply
    15,875.88x = 21,910.88 × 12,093.72
  4. Step 4: Simplify right side
    15,875.88x = 264,984,047.67
  5. Step 5: Solve for x
    x = 264,984,047.67/15,875.88
  6. Step 6: Final answer
    x = 16,690.98

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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.