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Finding the Fourth Proportional to 14,778.51, 20,393.55 and 8,064.15

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Solution

The fourth proportional to 14,778.51, 20,393.55 and 8,064.15 is: 11,128.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.51 : 20,393.55 = 8,064.15 : x
  2. Step 2: Convert to fraction form
    14,778.51/20,393.55 = 8,064.15/x
  3. Step 3: Cross multiply
    14,778.51x = 20,393.55 × 8,064.15
  4. Step 4: Simplify right side
    14,778.51x = 164,456,646.23
  5. Step 5: Solve for x
    x = 164,456,646.23/14,778.51
  6. Step 6: Final answer
    x = 11,128.09

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Half scale
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Double scale
Find fourth proportional to 14,779.51, 20,394.93 and 8,065.15
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.