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Finding the Fourth Proportional to 9,808.92, 13,539.28 and 6,666.93

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Solution

The fourth proportional to 9,808.92, 13,539.28 and 6,666.93 is: 9,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,808.92 : 13,539.28 = 6,666.93 : x
  2. Step 2: Convert to fraction form
    9,808.92/13,539.28 = 6,666.93/x
  3. Step 3: Cross multiply
    9,808.92x = 13,539.28 × 6,666.93
  4. Step 4: Simplify right side
    9,808.92x = 90,265,478.62
  5. Step 5: Solve for x
    x = 90,265,478.62/9,808.92
  6. Step 6: Final answer
    x = 9,202.38

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Half scale
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Double scale
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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.