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Finding the Fourth Proportional to 15,088.93, 20,822.94 and 8,374.99

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Solution

The fourth proportional to 15,088.93, 20,822.94 and 8,374.99 is: 11,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.93 : 20,822.94 = 8,374.99 : x
  2. Step 2: Convert to fraction form
    15,088.93/20,822.94 = 8,374.99/x
  3. Step 3: Cross multiply
    15,088.93x = 20,822.94 × 8,374.99
  4. Step 4: Simplify right side
    15,088.93x = 174,391,914.27
  5. Step 5: Solve for x
    x = 174,391,914.27/15,088.93
  6. Step 6: Final answer
    x = 11,557.61

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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.