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Finding the Fourth Proportional to 18,612.48, 25,693.98 and 10,653.12

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Solution

The fourth proportional to 18,612.48, 25,693.98 and 10,653.12 is: 14,706.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.48 : 25,693.98 = 10,653.12 : x
  2. Step 2: Convert to fraction form
    18,612.48/25,693.98 = 10,653.12/x
  3. Step 3: Cross multiply
    18,612.48x = 25,693.98 × 10,653.12
  4. Step 4: Simplify right side
    18,612.48x = 273,721,052.22
  5. Step 5: Solve for x
    x = 273,721,052.22/18,612.48
  6. Step 6: Final answer
    x = 14,706.32

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Double scale
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Similar ratio
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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.