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Finding the Fourth Proportional to 5,308.11, 7,962.17 and 2,385.63

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Solution

The fourth proportional to 5,308.11, 7,962.17 and 2,385.63 is: 3,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.11 : 7,962.17 = 2,385.63 : x
  2. Step 2: Convert to fraction form
    5,308.11/7,962.17 = 2,385.63/x
  3. Step 3: Cross multiply
    5,308.11x = 7,962.17 × 2,385.63
  4. Step 4: Simplify right side
    5,308.11x = 18,994,779.69
  5. Step 5: Solve for x
    x = 18,994,779.69/5,308.11
  6. Step 6: Final answer
    x = 3,578.45

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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.