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Finding the Fourth Proportional to 14,894.60, 20,547.81 and 11,914.61

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Solution

The fourth proportional to 14,894.60, 20,547.81 and 11,914.61 is: 16,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,894.60 : 20,547.81 = 11,914.61 : x
  2. Step 2: Convert to fraction form
    14,894.60/20,547.81 = 11,914.61/x
  3. Step 3: Cross multiply
    14,894.60x = 20,547.81 × 11,914.61
  4. Step 4: Simplify right side
    14,894.60x = 244,819,039.77
  5. Step 5: Solve for x
    x = 244,819,039.77/14,894.60
  6. Step 6: Final answer
    x = 16,436.77

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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.