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Finding the Fourth Proportional to 7,416.90, 11,125.35 and 7,200.90

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Solution

The fourth proportional to 7,416.90, 11,125.35 and 7,200.90 is: 10,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,416.90 : 11,125.35 = 7,200.90 : x
  2. Step 2: Convert to fraction form
    7,416.90/11,125.35 = 7,200.90/x
  3. Step 3: Cross multiply
    7,416.90x = 11,125.35 × 7,200.90
  4. Step 4: Simplify right side
    7,416.90x = 80,112,532.82
  5. Step 5: Solve for x
    x = 80,112,532.82/7,416.90
  6. Step 6: Final answer
    x = 10,801.35

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Half scale
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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.