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Finding the Fourth Proportional to 13,772.04, 19,004.88 and 7,484.28

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Solution

The fourth proportional to 13,772.04, 19,004.88 and 7,484.28 is: 10,328.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.04 : 19,004.88 = 7,484.28 : x
  2. Step 2: Convert to fraction form
    13,772.04/19,004.88 = 7,484.28/x
  3. Step 3: Cross multiply
    13,772.04x = 19,004.88 × 7,484.28
  4. Step 4: Simplify right side
    13,772.04x = 142,237,843.29
  5. Step 5: Solve for x
    x = 142,237,843.29/13,772.04
  6. Step 6: Final answer
    x = 10,328.02

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Half 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.