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Finding the Fourth Proportional to 13,366.16, 18,444.94 and 7,398.08

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Solution

The fourth proportional to 13,366.16, 18,444.94 and 7,398.08 is: 10,209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366.16 : 18,444.94 = 7,398.08 : x
  2. Step 2: Convert to fraction form
    13,366.16/18,444.94 = 7,398.08/x
  3. Step 3: Cross multiply
    13,366.16x = 18,444.94 × 7,398.08
  4. Step 4: Simplify right side
    13,366.16x = 136,457,141.72
  5. Step 5: Solve for x
    x = 136,457,141.72/13,366.16
  6. Step 6: Final answer
    x = 10,209.15

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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.