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Finding the Fourth Proportional to 18,416.76, 25,424.76 and 14,374.92

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Solution

The fourth proportional to 18,416.76, 25,424.76 and 14,374.92 is: 19,844.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,416.76 : 25,424.76 = 14,374.92 : x
  2. Step 2: Convert to fraction form
    18,416.76/25,424.76 = 14,374.92/x
  3. Step 3: Cross multiply
    18,416.76x = 25,424.76 × 14,374.92
  4. Step 4: Simplify right side
    18,416.76x = 365,478,891.02
  5. Step 5: Solve for x
    x = 365,478,891.02/18,416.76
  6. Step 6: Final answer
    x = 19,844.91

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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.