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Finding the Fourth Proportional to 14,079.16, 19,420.76 and 9,299.14

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Solution

The fourth proportional to 14,079.16, 19,420.76 and 9,299.14 is: 12,827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.16 : 19,420.76 = 9,299.14 : x
  2. Step 2: Convert to fraction form
    14,079.16/19,420.76 = 9,299.14/x
  3. Step 3: Cross multiply
    14,079.16x = 19,420.76 × 9,299.14
  4. Step 4: Simplify right side
    14,079.16x = 180,596,366.15
  5. Step 5: Solve for x
    x = 180,596,366.15/14,079.16
  6. Step 6: Final answer
    x = 12,827.21

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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.