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Finding the Fourth Proportional to 9,906.30, 14,859.45 and 9,368.70

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Solution

The fourth proportional to 9,906.30, 14,859.45 and 9,368.70 is: 14,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,906.30 : 14,859.45 = 9,368.70 : x
  2. Step 2: Convert to fraction form
    9,906.30/14,859.45 = 9,368.70/x
  3. Step 3: Cross multiply
    9,906.30x = 14,859.45 × 9,368.70
  4. Step 4: Simplify right side
    9,906.30x = 139,213,729.22
  5. Step 5: Solve for x
    x = 139,213,729.22/9,906.30
  6. Step 6: Final answer
    x = 14,053.05

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.