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Finding the Fourth Proportional to 10,808.69, 14,915.99 and 5,840.69

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Solution

The fourth proportional to 10,808.69, 14,915.99 and 5,840.69 is: 8,060.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.69 : 14,915.99 = 5,840.69 : x
  2. Step 2: Convert to fraction form
    10,808.69/14,915.99 = 5,840.69/x
  3. Step 3: Cross multiply
    10,808.69x = 14,915.99 × 5,840.69
  4. Step 4: Simplify right side
    10,808.69x = 87,119,673.63
  5. Step 5: Solve for x
    x = 87,119,673.63/10,808.69
  6. Step 6: Final answer
    x = 8,060.15

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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.