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Finding the Fourth Proportional to 14,405.66, 19,878.00 and 8,030.69

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Solution

The fourth proportional to 14,405.66, 19,878.00 and 8,030.69 is: 11,081.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,405.66 : 19,878.00 = 8,030.69 : x
  2. Step 2: Convert to fraction form
    14,405.66/19,878.00 = 8,030.69/x
  3. Step 3: Cross multiply
    14,405.66x = 19,878.00 × 8,030.69
  4. Step 4: Simplify right side
    14,405.66x = 159,634,026.20
  5. Step 5: Solve for x
    x = 159,634,026.20/14,405.66
  6. Step 6: Final answer
    x = 11,081.34

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Half 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.