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Finding the Fourth Proportional to 14,124.90, 21,187.90 and 4,264.18

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Solution

The fourth proportional to 14,124.90, 21,187.90 and 4,264.18 is: 6,396.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.90 : 21,187.90 = 4,264.18 : x
  2. Step 2: Convert to fraction form
    14,124.90/21,187.90 = 4,264.18/x
  3. Step 3: Cross multiply
    14,124.90x = 21,187.90 × 4,264.18
  4. Step 4: Simplify right side
    14,124.90x = 90,349,019.42
  5. Step 5: Solve for x
    x = 90,349,019.42/14,124.90
  6. Step 6: Final answer
    x = 6,396.44

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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.