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Finding the Fourth Proportional to 14,368.68, 19,828.37 and 8,706.78

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Solution

The fourth proportional to 14,368.68, 19,828.37 and 8,706.78 is: 12,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,368.68 : 19,828.37 = 8,706.78 : x
  2. Step 2: Convert to fraction form
    14,368.68/19,828.37 = 8,706.78/x
  3. Step 3: Cross multiply
    14,368.68x = 19,828.37 × 8,706.78
  4. Step 4: Simplify right side
    14,368.68x = 172,641,255.35
  5. Step 5: Solve for x
    x = 172,641,255.35/14,368.68
  6. Step 6: Final answer
    x = 12,015.11

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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.