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Finding the Fourth Proportional to 15,666.59, 21,619.50 and 8,593.13

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Solution

The fourth proportional to 15,666.59, 21,619.50 and 8,593.13 is: 11,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,666.59 : 21,619.50 = 8,593.13 : x
  2. Step 2: Convert to fraction form
    15,666.59/21,619.50 = 8,593.13/x
  3. Step 3: Cross multiply
    15,666.59x = 21,619.50 × 8,593.13
  4. Step 4: Simplify right side
    15,666.59x = 185,779,174.04
  5. Step 5: Solve for x
    x = 185,779,174.04/15,666.59
  6. Step 6: Final answer
    x = 11,858.30

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.