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Finding the Fourth Proportional to 8,113.77, 11,196.99 and 4,387.77

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Solution

The fourth proportional to 8,113.77, 11,196.99 and 4,387.77 is: 6,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.77 : 11,196.99 = 4,387.77 : x
  2. Step 2: Convert to fraction form
    8,113.77/11,196.99 = 4,387.77/x
  3. Step 3: Cross multiply
    8,113.77x = 11,196.99 × 4,387.77
  4. Step 4: Simplify right side
    8,113.77x = 49,129,816.81
  5. Step 5: Solve for x
    x = 49,129,816.81/8,113.77
  6. Step 6: Final answer
    x = 6,055.12

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Find fourth proportional to 4,056.89, 5,598.50 and 2,193.89
Half scale
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Double scale
Find fourth proportional to 8,114.77, 11,198.37 and 4,388.77
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.