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Finding the Fourth Proportional to 12,476.66, 18,708.71 and 4,153.71

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Solution

The fourth proportional to 12,476.66, 18,708.71 and 4,153.71 is: 6,228.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.66 : 18,708.71 = 4,153.71 : x
  2. Step 2: Convert to fraction form
    12,476.66/18,708.71 = 4,153.71/x
  3. Step 3: Cross multiply
    12,476.66x = 18,708.71 × 4,153.71
  4. Step 4: Simplify right side
    12,476.66x = 77,710,555.81
  5. Step 5: Solve for x
    x = 77,710,555.81/12,476.66
  6. Step 6: Final answer
    x = 6,228.47

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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.